Physics Questions Sep-2023

Physics Questions Sep-2023

1. Heat given to a body which raises its temperature 1 degree Celsius is known as-
   (A) Water equivalent
   (B) Thermal Capacity
   (C) Specific Heat
   (D) Temperature gradient

2. Which of the following laws was formulated was Nernst?
(A) First law of thermodynamics
(B) Second law of thermodynamics
(C) Third law of thermodynamics
(D) All of the above

3. What is the S.I. unit of force?
(A) Kg m/sec2 (B) Kg m/sec
(C) Meter/sec (D) Kg sec/m2

4. A/an __ is used to measure the force and velocity of wind?
(A) Speedometer (B) Odometer
(C) Anemometer (D) Hygrometer

5.Which of the following effect cannot be produced
by unbalanced force acting on a body?
(A) Change in speed of the body
(B) Change in shape of the body
(C) Change in direction of motion
(D) Change in state of rest

6.Optical Fiber work on the principle of –
(A) Dispersion of light
(B) Diffraction of light
(C) Total internal reflection
(D) Interference of light

7. Which one of the following instrument is used to study dispersion of light?
(A) Actinometer (B) Cathetometer
(C) Spectrometer (D) Densitometer

8.What is the coefficient of restitution for a perfectly elastic collision?
(A) 0 (B) 1
(C) -1 (D) 100

9. The gravitational force of attraction between two bodies is _ the distance between the two bodies.
(A) Inversely proportional to the
(B) Directly proportional to the square of
(C) Inversely proportional to the square of
(D) Directly proportional to the

10.A ray of white light strikes the surface of an object. If all the colours are reflected the surface would appear:
(A) Black (B) White
(C) Grey (D) Red

11.FM radio broadcasts are a popular mode of communication today. What does FM stand for?
(A) Frequency Modulation
(B) Flexible Module
(C) Frequency mixing
(D) Flexible Multidimensiona

12.India entered into space age by launching the satellite Aryabhata in the year?
(A) 1932 (B) 1965
(C) 1975 (D) 1990

13. What is the distance between the poles of the mirror and the focus?
(A) Principal axis (B) Focal length
(C) Radius of curvature (D) Center of curvature

14. Which physical amount is obtained from the ratio
of momentum and the velocity?
(A) Velocity (B) Acceleration
(C) Mass (D) Angular velocity

15. Rocket works on which principle?
(A) Energy Conservation
(B) Bernoulli theorem
(C) Conservation of Momentum
(D) Law of thermodynamics

16.What is the measure by Cusec?
(A) Water drift (B) Depth of water
(C) Volume of water (D) Purity of wate

17. Soldering of two metals is possible due to the
property of-
(A) Diffusion (B) Viscosity
(C) Surface tension (D) Cohesion

18.Why boiling point of water decreases with
altitude?
(A) Low pressure (B) Low temperature
(C) High temperature (D) High pressure

19.When a piece of stone is immersed in water, it
displaces water of equal-
(A) Density (B) Specific Gravity
(C) Mass (D) Volume

20. First law of thermodynamics is normally related to-
(A) Charles’s law
(B) Boyle’s law
(C) Newton’s law of cooling
(D) Law of conservation of Energy

21.Consider the following statements.

1. A magnifying glass is a convex lens that is used
   to produce a magnified image of an object.
2. A convex lens is called as diverging lens or
   Negative lens

Which is/are correct statement?
(A) Only 1 (B) Only 2
(C) 1 and 2 (D) None of these

22. Consider the following statements.

1. Candela is the SI unit of luminous intensity.
2. Maxwell is the SI unit of magnetic flux.
3. Ohm-meter is the unit of specific resistance.
   Which is/are correct statement?
   (A) Only 1 (B) Only 2
   (C) 1 and 2 (D) None of these

23. Consider the following statements.

1. The best and the poorest conductors of heat are
   respectively silver and gold.
2. Tungsten has the highest melting point of 3,410
   ° C (6,170 ° F) over all metals.
   Which is/are correct statement?
   (A) Only 1 (B) Only 2
   (C) 1 and 2 (D) None of these

24. Consider the following statements.

1. Light travels at the fastest speed in the air.
2. Sound is a longitudinal wave, while light is a
   transverse wave.
   Which is/are the correct statement?
   (A) Only 1 (B) Only 2
   (C) 1 and 2 (D) None of these

25. Which of the following statement (s) is true?
I. Curie is a unit of radioactivity
II. Gravitational force is maximum at equator
Select the correct option
(A) Only I (B) Only II
(C) Both I & II (D) Neither I nor II

Answer : 1-(B) 2-(C) 3-(A) 4-(C) 5-(B) 6-(C) 7-(C) 8-(B) 9-(C) 10-(B) 11-(A) 12-(C) 13-(B) 14-(C) 15-(C) 16-(A) 17-(D) 18-(A) 9-(C) 20-(D) 21-(A) 22-(D) 23-(B) 24-(B) 25-(A)