UPPCS Physics PYQs.

1.Match List-I with List-II and select the correct answer using the codes given below the lists:

A. Pressure

B. Force

C. Temperature

D. Energy

1. Newton

2. Kelvin

3. Pascal

4. Joule

2.Match List-I (Quantity) with List-II (Units) and select the correct answer using the codes given below:

A. High speed

B. Wavelength

C. Pressure

D. Energy

1. Mach

2. Angstrom

3. Pascal

4. Joule

3.Match List I with List II and select the correct answer using the codes given below:

A. Acceleration

B. Force

C. Work done

D. Impulse

1. Joule

2. Newton-Second

3. Newton

4. Meter/Second²

4.What is the SI unit of mechanical energy?

5.The unit of work is—

6.Match List-I with List-II and select the correct answer from the codes given below the lists:

A. Wavelength

B. Energy

C. Intensity of sound

D. Frequency

1. Hertz

2. Angstrom

3. Joule

4. Decibel

7.Light year is a unit of:

8.A light year is the—

9.Which of the following is not a unit of time?

10.Which one of the following is not correctly matched?

11.Which one of the following is not correctly matched?

12.Match List I with List II and select the correct answer using the codes given below:

A. Watt

B. Knot

C. Nautical miles

D. Calorie

1. Heat

2. Navigation

3. Speed of ship

4. Power

13.Which one of the following is not a unit of heat?

14.Which of the following pairs is NOT correctly matched?

15.Electron volt is a unit of:

16.The ‘parsec’ is the unit of:

17.Shortest unit of length is—

18.Which of the following SI units are not correctly matched?

19.Match List I with List II and select the correct answer using the codes given below:

A. Cusec

B. Byte

C. Richter

D. Bar

1. Pressure

2. Intensity of Earthquake

3. Rate of flow

4. Computer

20.Which of the following is not correctly matched?

21.Megawatt is unit to measure electricity which is—

22.Kilowatt-Hour is unit of—

23.The value of 1 kilowatt hour is—

24.The speed of aircraft and ships are represented in knot. The speed of 100 knot will be—

25.In which of the following parameter of temperature does not occur negative value?

26.1 nanometer is:

27.The intensity of earthquake is measured—

28.How much is one barrel of oil approximately equal to?

29.Which unit of measurement is multiplied by 0.39 to convert it to ‘inches’?

30.Which one of the following can be used to measure temperature above 1500°C?

31.The thermometer which is used to measure 2000°C temperature, is—

32.Which one of the following devices is used to measure extremely high temperature?

33.Pyrometer is used to measure—

34.Which one of the following thermometers is known as pyrometer?

35.Match List I with List II and select the correct answer using the codes given below:

A. Ammeter

B. Hygrometer

C. Barometer

D. Spring balance

1. Pressure

2. Weight

3. Electric current

4. Relative humidity

36.Which one of the following is not correctly matched?

37.Match List I with List II and select the correct answer using the codes given below:

A. Stethoscope

B. Sphygmomanometer

C. Caratometer

D. Lux meter

1. To measure intensity of light

2. To check purity of gold

3. To hear heart sound

4. To measure blood pressure

38.Which equipment is used to measure blood pressure?

39.Match List-I with List-II and select the correct answer from the codes given below the lists:

A. Anemometer

B. Seismograph

C. Barograph

D. Hygrometer

1. Earthquakes

2. Atmospheric pressure

3. Wind velocity

4. Humidity

40.Relative humidity is measured by:

41.The velocity of wind is measured by—

42.‘Ringelmann scale’ is used to measure density of:

43.Mercury is generally used in thermometer due to its characteristic of—

44.‘Pyrheliometer’ is used for measuring:

45.Which one of the following is not correctly matched?

46.The intensity of earthquake is measured by which of the following device?

47.Stethoscope, used by doctors works on the principle of—

48.Auxanometer is used to measure the rate of—

49.Which of the following pair is not correctly matched?

50.Photometer is used to measure which one of the following?

51.Instrument used to measure the intensity of light is called—

52.Sextant is used for—

53.Which one of the following is a vector quantity?

1.For every action there is an equal and opposite reaction. This law was given by:

2.Pendulum clock becomes slow in summer because:

3.Rocket works on which of the following principles—

4.Jet engine works on the principle of—

5.The jet aircraft flies very easily and smoothly in the lower stratosphere. What could be the appropriate explanation?

(i) There are no clouds or water vapour in the lower stratosphere

(ii) There are no vertical winds in the lower stratosphere

6.A man is standing on a boat in the still water. If he moves towards the corner, then the boat would—

7.One person is sitting in a train having his face towards engine. When he tosses a coin, it fall to its back. Train is moving—

8.As the train starts moving, the head of the passenger sitting inside leans backwards because of—

9.In wind power, which form of energy is converted into electrical energy?

10.While floating in the sea, how much part of an iceberg is above the sea level?

11.When the velocity of a movable object is doubled then its kinetic energy would be—

12.The weight of a body is:

13.The iron ball which has weight of 10 kg on earth would have weight in space?

14.If the gravitational force of the earth suddenly disappears, which of the following will be the correct consequence?

15.A person whose weight is 60 kg on earth has weight approx. 10 kg on moon. What would be his weight in space?

16.When any object is shifted to earth from moon, then—

17.When any substance is moved from earth to moon, then—

18.If an apple is released from an orbiting spaceship, it will—

19.Astronauts in space cannot stand erect this is because in space:

20.If the distance between the Earth and the Sun were twice what it is now, the gravitational force exerted on the Earth by the Sun would be:

21.A bullet is fired perpendicularly. It takes t₁ to reach at the maximum point. From there it takes t₂ to reach at the ground. In such situation, which of the following is correct?

1.In a pressure cooker food is cooked in shorter time because:

2.Underground water remains at how much pressure?

3.While traveling by plane, the ink of the pen starts to come out—

4.The pressure inside the soap bubble is—

5.Why water boils below 100°C at high altitude?

6.Spherical form of raindrop is due to:

7.While lifting a bucket of water from a well, we feel that the bucket:

8.Oil spreads on water surface because—

9.Hair of shaving brush clings together when the brush is removed from the water due to?

10.At which temperature density of water is maximum?

11.The maximum density of water is at—

12.Increasing the amount of a substance does not change its—

13.A weightless rubber balloon is filled with 200 cc of water. Its weight in water is equal to:

14.A piece of ice is floating in a beaker, full of water. When all the ice would melt, then—

15.When water is heated from 0°C to 4°C then its volume—

16.A body weight is highest in which among the following?

17.The Leaning Tower of Pisa does not fall because—

18.If an unsaturated sugar solution is prepared by mixing 100 grams of sugar with half liter of water, which of the following physical quantities will not change?

19.A needle sinks in water whereas a ship made of iron floats on it because:

20.When a ship enters a sea from a river, what happens?

1.The technique used to transmit audio signals in television broadcasts is—

2.Human ear cannot listen to a frequency more than which one of the following frequency?

3.Consider the following statements:

1. The heart vibrates at infrasonic frequency

2. Speed of sound is more in gas than in liquid and solid

3. Mach number is used to describe the speed of sound

4. Ultrasonic sound has frequency more than 20,000 Hz

Which of these statements are correct?

4.One important characteristic of sound is ‘Pitch’, which depends upon:

5.Ultrasonic are the sound waves of frequency:

6.Which one of the following use to a TV remote control unit to operate a TV set?

7.Which electromagnetic radiation is used in remote control of a television?

8.Consider the following statements about ultrasonic waves:

(1) They can destroy insects

(2) They can clean cloths by removing dust

(3) They can be used to treat disease

(4) They can control automatic doors

Which of the above statements are correct?

9.Which is being not used in night vision camera?

10.Radar is used mainly for:

11.Which one of the following instruments is used for locating submerged objects in an ocean?

12.With reference to sound, which of the following statements is/are correct?

1. Sound propagates even in vacuum.

2. Speed of sound is equal in all media.

13.If Va, Vw and Vs are the speed of sound in air, water and steel respectively, then—

14.Put in ascending order of speed of sound in the mediums I-Water, II-Steel, III-Nitrogen—

15.The sound will have highest velocity in:

16.Loudness of sound is measured in terms of following:

17.In a Sitar, which type of sound vibrations are produced?

18.Which of the following statement is not correct?

19.Sound moves like—

20.Sound above what level (decibels) is considered hazardous noise pollution?

21.Which of the following represents the decibel level of rustling of tree leaves in normal circumstance?

22.Waves used for telecommunication are—

23.Sound waves—

24.Which wave cannot be transmitted through vacuum?

25.The basic units of sound are called:

26.Bats can fly during dark nights and also prey. This is because—

27.Which one of the following statements is not true about cosmic rays?

28.The whistle sound of an approaching train increases whereas that of a receding train decreases. This phenomenon is an example of:

29.To hear a clear echo, the minimum distance between the reflecting surface and the observer should be?

30.CT Scan is done by using:

31.Assertion (A): Reverberant is mainly feels in large churches and in other large buildings.

Reason (R): The walls, roofs and ground may cause multiple sound reflections.

32.The walls of the hall built for music concerts should be:

33.In fiber optic communication the signal travels in the form of:

34.Television viewers using dish antenna to receive satellite signals do not receive signals during rain because:

1. Of small size of antenna

2. Rain droplets absorb the energy of radio waves

3. Rain droplets disperse the energy of radio waves from their original direction

Which of the above statements are correct?

35.Gravitational waves were seen for the first time in—

36.SONAR is mostly used by—

37.In SONAR, we use:

1.At what temperature are the readings of a Centigrade and Fahrenheit thermometer the same?

2.At which temperature, the Celsius and Fahrenheit scale coincides?

3.If the temperature of water is made to fall from 9°C to 3°C then what would be change in volume?

4.In which of the following conditions, the wet cloths will dry earliest?

5.The safest temperature for keeping food fresh in a refrigerator is—

6.Thermostat is a device which—

7.Thermostat is related to—

8.The function of thermostat in refrigerator is—

9.An air-conditioner installed in a room controls its:

10.If the door of the refrigerator is kept open for some hours then the temperature of the room will—

11.Assertion (A): If ice collects on the freezer, the cooling in the refrigerator is affected adversely.

Reason (R): Ice is a poor conductor.

12.Consider the following statements:

Assertion (A): Light colored cloths are preferred during summer.

Reason (R): Light colour absorbs less heat.

13.Assertion (A): A piece of ice added to the drink, cools it.

Reason (R): Ice takes latent heat from the drink for melting resulting in cooling of the drink.

14.When soggy biscuits are kept inside the fridge for some time, they become crisp because:

15.Which of the following statements is not true?

16.Human gets irritated due to humidity and heat because—

17.When a bottle is filled with water and is allowed to freeze then bottle breaks down, because—

18.A liquid remains hot or cold for a long time in thermos flask because there is no loss or gain of heat by—

19.White clothes are cooler than black clothes because—

20.Which one of the following methods is being used to cool down the engines of motor vehicles?

21.It is more comfortable to wear white cloth in summer because:

22.During summer season, relaxation is provided by fan because—

23.Which one of the following is best conductor of heat?

24.When ice melts then—

25.When an iron ball is heated then the maximum percentage increase will be—

26.Cloudy nights are warmer than clear nights because—

27.Match List- I with List- II and select the correct answer using the codes given below:

List-I

1.When petrol drops from a vehicle fall over rain water on the road, various colours are seen because of—

2.The colour of a star indicates—

3.The number of colours contained in the sunlight is:

4.Which one of the following colours is seen in the middle of a rainbow?

5.The colour of light is determined by its—

6.Blue colour of the sky is due to—

7.When sky is being looked at from an aircraft flying at very high altitude, then its colour looks:

8.The (Green) grass appears green to us because—

9.Match List I with List II and select the correct answer using the code given below the lists:

List-I

A. Mirage

B. Colour of soap water films

C. Blue colour of sky

D. Spectrum seen through prisms

List-II

1. Total internal reflection

2. Interference

3. Scattering

4. Dispersion

Code:

10.Among the colours mentioned below the eye is most sensitive to colours between—

11.Assertion (A): The danger signal is made up of red colour.

Reason (R): Red colour is scattered the least.

12.The red colour of the sun at sunset and sun-rise is due to—

13.The reason behind the red colour of sun at sunset?

14.In which colour, green colour glass plate is visible in red colour light?

15.Which mirror is used as a rear view mirror in vehicles?

16.A mirror which allows viewing a very large area must be—

17.Which type of mirror is used in car for viewing rear view?

18.How many images will be formed if a point light source is placed between two parallel plane mirrors?

19.To look total image of a person, the minimum height of a plane mirror is—

20.How much minimum length of mirror is required for a person who is 1.50 meter tall to view his complete image?

21.Radius of curvature of a plane mirror is—

22.The mirror used by the dentists to see the teeth of the patients is:

23.The mirror used in search lights is:

24.Which one of the following statement is not correct?

25.The phenomenon used in optical fibre for transmission of light energy is—

26.Mirage is an example of—

27.A cut diamond shines brilliantly due to:

28.Diamond shines due to—

29.Doctors use endoscope to look deep into body. It is based on the following principle—

30.Monitoring of abdominal cavity of patients by doctors is being done by “endoscope” which works on which one of the following principle?

31.Light appears to move in a straight line because—

32.The light of shortest wavelength is—

33.Human eye is most sensitive for visibility to which wavelength?

34.Red light is used in traffic signals because—

35.The sunlight from the Sun to the Earth reaches in—

36.Which one of the following reflects back more sunlight as compared to other three?

37.Sky appears blue because—

38.Myopia can be corrected by using—

39.An air bubble in water will act like a:

40.Which of the following statement is not true for a person suffering from hypermetropia?

41.The minimum distance of clear vision for a normal healthy eye of human being is supposed to be:

42.Black body does NOT—

43.Diffusion of light in the atmosphere takes place due to—

44.Which one of the following is associated with ‘Albedo’?

45.Which of the following has the highest velocity?

46.Both the marginal spectrum of a rainbow is—

47.The band spectrum of visible light is:

48.Which one of the following statement is correct?

49.When light moves from one medium to another, then which one of the following does not change?

50.By which property, a rod dipped in a vessel full of water appears bent?

51.An air bubble inside water behaves as a:

52.A person with vision defect ‘Myopia’ can see—

53.The sun and moon appear elliptical near the horizon because of:

54.Image formed on retina is:

55.At which part of the human eyes the electric waves convert to impulse ligament?

56.The concentration in eye is due to—

57.The power of sun glass is—

58.Red light is used as danger signal because it:

59.The image formed by an astronomical telescope is:

60.Which type of the following radiation has maximum energy?

61.Direct viewing of sun during total solar eclipse causes irreversible damage of eyes. The retinal burn caused by which one of the following components of sun rays?

1.Filament in electric bulb is made of—

2.How two identical bulbs should be connected to get maximum light?

(1) Both are connected in Series

(2) Both are connected in parallel

Select the correct answer using the code given below:

3.The two bulbs in a house, one glows brighter than the other. In this context which of the following statements is correct?

4.A 100 watt electric bulb is switched on for four hours. Used electrical energy in units will be?

5.A 100 watt bulb lights up eight hours daily. Electricity power consumption for the month of April will be—

6.Five bulbs each of 100 watt capacity in a tunnel are illuminated continuously for twenty hours. The consumption of electricity will be—

7.A device which converts electrical energy into mechanical energy is:

8.A device which is used to convert mechanical energy into electrical energy is—

9.In a three pin electrical plug, longest pin should be connected to:

10.The use of earthing in electrical equipment is—

11.The best conductor of electricity amongst the following is—

12.Assertion (A): Lightning conductors prevent buildings from damage in the event of lightning strike.

Reason (R): The electric charge conduct to ground through the wire, instead of passing through the structure.

Codes:

13.Assertion (A): Copper rods are given preference over iron rods to manufacture lightning conductors.

Reason (R): Copper is more conductive to electricity as compared to iron and normally do not oxidize in atmospheric conditions.

Codes:

14.Electric motors operating at low voltages tend to burn out because—

15.The device of converting alternate current to direct current is called—

16.Alternate current is converted to direct current by—

17.A fuse is a:

18.With reference to the ‘electric potential’, which of the following statements is/are correct?

1. It is a scalar quantity.

2. It is a vector quantity.

Codes:

19.Transformer is used to—

20.A dynamo which is said to generate electricity actually acts as a:

21.Which of the following represents the sequence in increasing power consumption?

22.The value of internal resistance of an ideal cell is—

23.A mobile phone charger is:

24.Which of the following elements is a semi conductor?

25.Which of the following is a semiconductor?

26.Which among the following are semiconductors?

1. Silicon

2. Quartz

3. Ceramic

4. Germanium

Choose the correct answer from the following options:

27.Which one of the following is an important part of transistor?

28.Consider the following statements:

Assertion (A): The electrical conductivity of semiconductors increases with rise of temperature.

Reason (R): Semiconductors possess a negative temperature coefficient of resistance.

Codes:

29.The resistance of a semiconductor on heating—

1.Which one of the following metal is not attracted by magnet?

2.Two steel pins, sticking to the end of a bar magnet do not hang vertically because—

3.If a magnet is cut into two pieces of equal length, then—

4.By increasing number of turns in coil, power of magnetic field—

5.The electromagnetism based device is:

1.Which one of the following is used as a moderator in the nuclear reactor?

2.Graphite is used in the nuclear reactor as a—

3.The substance used as a moderator and coolant both, in nuclear reactors is—

4.What is nuclear reactor?

5.A breeder reactor is that which—

6.The difference between a nuclear reactor and an atomic bomb is—

7.Which one of the following is the source of renewable energy in stars?

8.The energy from sun is released due to—

9.The concept of atom bomb is based on—

10.Enriched Uranium is—

11.Which one of the following cannot be used as nuclear fuel?

1.Which of the following is used in fire alarm?

2.Match List I with List II and select the correct answer using the codes given below:

List-I (Energy Transformation)

A. Heat to electrical

B. Electrical to sound

C. Mass to heat

D. Chemical to heat and light

List-II (Device/Process)

1. Car braking

2. Nuclear reactor

3. Loud speaker

4. Solar cell

5. Fuel burning

Codes:

3.Which one of the following sets makes the terminals of the ordinary torch cell?

4.In which of the following types of heat engines carburetor is used?

5.By rotating a burning pencil like body with speed in front of a T.V or tube light reflects so many images of that body to us. It is due to—

6.Consider the following statement and conclusions which can be drawn from it. Choose the correct conclusion.

Statement: In starting a loaded cart, one has to push harder than to keep it moving

Conclusion:

7.Arrange the following in chronological order as per their discovery and select correct answer from the code given below:

1. Transistor

2. Diode

3. SMD (Surface Mounted Device)

4. Integrated Circuit (IC)

8.Which of the following was invented by Wilhelm Roentgen?

9.The common name of Higgs Boson particle is—

10.Automatic wrist watches energy is provided by—

11.It is harder to move on ice as compared to road because—

12.The signal of Doordarshan cannot be received after a definite distance, because—

13.Which one of the following does not deform protein?

14.In India, which one of the following has highest contribution in energy production?

15.You are traveling in a storm. What will you select to get protection from lighting?

16.X-rays which enters deep into the material are called—