Physics · NDA previous year questions

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2018 41 questions

Q572018 · 22 Apr 2018
Which one of the following is the value of 1 kWh of energy converted into joules?
1. A. $1.8 \times 1 0^{6}$ J
2. B. $3.6 \times 1 0^{6}$ J
3. C. $6.0 \times 1 0^{6}$ J
4. D. $7.2 \times 1 0^{6}$ J
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Answer: B
Q592018 · 22 Apr 2018
Whether an object will float or sink in a liquid, depends on
1. A.mass of the object only
2. B.mass of the object and density of liquid only
3. C.difference in the densities of the object and liquid
4. D.mass and shape of the object only
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Answer: C
Q602018 · 22 Apr 2018
Which one of the following devices is non-ohmic?
1. A.Conducting copper coil
2. B.Electric heating coil
3. C.Semi conductor diode
4. D.Rheostat
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Answer: C
Q612018 · 22 Apr 2018
Which one of the following is the natural phenomenon based on which a simple periscope works?
1. A.Reflection of light
2. B.Refraction of light
3. C.Dispersion of light
4. D.Total internal reflection of light
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Answer: A
Q622018 · 22 Apr 2018
Which one of the following frequency ranges is sensitive to human ears?
1. A.0 – 200 Hz
2. B.20 – 20,000 Hz
3. C.200 – 20,000 Hz only
4. D.2,000 – 20,000 Hz only
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Answer: B
Q632018 · 22 Apr 2018
Which of the following statements about a fluid at rest in a cup is/are correct? 1. Pressure is same at all the points in the fluid. 2. Pressure is exerted on the walls. 3. Pressure exists everywhere in the fluid. Select the correct answer using the code given below :
1. A.1 and 2 only
2. B.2 and 3 only
3. C.1 only
4. D.1, 2 and 3
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Answer: B
Q642018 · 22 Apr 2018
Which one of the following devices is used to measure atmospheric pressure?
1. A.Ammeter
2. B.Barometer
3. C.Potentiometer
4. D.Lactometer
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Answer: B
Q652018 · 22 Apr 2018
Which of the following statements about latent heat for a given substance is/are correct? 1. It is fixed at a given temperature. 2. It depends upon the temperature and volume. 3. It is independent of temperature and volume. 4. It depends on the temperature but independent of volume. Select the correct answer using the code given below:
1. A.2
2. B.1 and 3
3. C.4 only
4. D.1 and 4
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Answer: D
Q662018 · 22 Apr 2018
MCQ (More than One Correct Answer) Which one of the following statements about the mass of a body is correct?
1. A.It changes from one place to another
2. B.It is same everywhere
3. C.It depends on its shape
4. D.It does not depend on its temperature
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Answer: B, D
Q682018 · 22 Apr 2018
Which of the following statements about specific heat of a body is/are correct? 1. It depends upon mass and shape of the body 2. It is independent of mass and shape of the body 3. It depends only upon the temperature of the body Select the correct answer using the code given below :
1. A.1 only
2. B.2 and 3
3. C.1 and 3
4. D.2 only
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Answer: D
Q692018 · 22 Apr 2018
Which one of the following is an example of the force of gravity of the earth acting on a vibrating pendulum bob?
1. A.Applied force
2. B.Frictional force
3. C.Restoring force
4. D.Virtual force
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Answer: C
Q712018 · 22 Apr 2018
Which one of the following statements about magnetic field lines is NOT correct?
1. A.They can emanate from a point
2. B.They do not cross each other
3. C.Field lines between two poles cannot be precisely straight lines at the ends
4. D.There are no field lines within a bar magnet
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Answer: D
Q722018 · 22 Apr 2018
Two convex lenses with power 2 dioptre are kept in contact with each other. The focal length of the combined lens system is
1. A.0.10 m
2. B.2 m
3. C.4 m
4. D.0.25 m
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Answer: D
Q732018 · 22 Apr 2018
Which of the following statements about electromagnetic waves, sound waves and water waves is/are correct? 1. They exhibit reflection 2. They carry energy 3. They exert pressure 4. They can travel in vacuum Select the correct answer using the code given below :
1. A.1, 2 and 3
2. B.2 and 4
3. C.1 and 3 only
4. D.1 only
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Answer: A
Q742018 · 22 Apr 2018
Thermal capacity of a body depends on the
1. A.mass of the body only
2. B.mass and shape of the body only
3. C.density of the body
4. D.mass, shape and temperature of the body
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Answer: A
Q1002018 · 22 Apr 2018
Light year is a unit for measurement of
1. A.age of universe
2. B.very small time intervals
3. C.very high temperature
4. D.very large distance
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Answer: D