Physics MCQ 003

Physics MCQ 003

1. An astronomical unit of distance is

(A) a kilometre

(B) light year

(C) the average distance from the earth to the sun

(D) None of the above

2. Chronometer is an instrument to measure

(A) heat

(B) electric potential

(C) time

(D) distance between two points

3. A light year means

(A) a unit of time

(B) a unit of length

(C) a year of no consequence

(D) illumination throughout the year

4. A bullet is fired at a certain angle with the horizontal. Its path will be

(A) elliptical

(B) a straight line

(C) a parabola

(D) a vertical line

5. A projectile is fired at an angle with the horizontal with a small velocity. Its horizontal range will be maximum when the angle with the horizontal is

(A) 0°

(B) 30°

(C) 45°

(D) 60°

6. A hunter on the ground wishes to shoot a bird on a tree at a distance with his rifle. He has to point the rifle

(A) at the lower elevation than the bird

(B) at a higher elevation than the bird

(C) in the same direction as the bird

(D) vertically upwards

7. What is the minimum velocity required for a rocket to overcome earth’s gravity and travel into space?

(A) 18 km/sec

(B) 11.2 km/sec

(C) 21 km/sec

(D) 35 km/sec

8. In the case of bodies falling under gravity which of the following remains constant at a given place?

(A) kinetic energy

(B) potential energy

(C) acceleration

(D) All the above

9. The motion of the pendulum of a wall clock is an example of

(A) linear motion

(B) vibratory motion

(C) rotational motion

(D) None of the above

10. The distance between two bodies is halved. Now the force of attraction between them will be

(A) half

(B) one fourth

(C) four times

(D) two times

Answers

1. B

2. C

3. B

4. C

5. C

6. B

7. B

8. C

9. B

10. C

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