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Physics Mcqs :: All Aptitude Test ::

Home » General Knowledge » Physics Mcqs » Aptitude Test - 5
1.Which of the following is constant in projectile motion?
A. Horizontal component
B. Vertical component
C. Velocity of projection
D. Horizontal component
2.At the highest point of a projectile, its velocity and acceleration are at an angle of?
A. 0°
B. 45°
C. 90°
D. 0°
3.An aeroplane flying horizontally with a speed of 360km/h releases a bomb at a height of 490m from the ground. If g=9.8m/s2 , it will strike the ground at ?
A. 10km
B. 100km
C. 1km
D. 10km
4.A stone tied to the end of string 80cm long is whirled in horizontal circle with a constant speed. If the stone makes 14 revolutions in 25 sec, what is the magnitude of acceleration of the stone?
A. 680 cm/s2
B. 860 cm/s2
C. 720 cm/s2
D. 680 cm/s2
5.When a body falls freely under gravity, then the work done by the gravity is?
A. Positive
B. Negative
C. Zero
D. Positive
6.When a body slides against a rough horizontal surface, the work done by friction is?
A. Positive
B. Zero
C. Negative
D. Positive
7.For a body moving in a circular path, the work done by the centripetal force is?
A. Negative
B. Positive
C. Constant
D. Negative
8.A gardener pushes a lawn roller through a distance of 20m. If he applies a force of 20kg weight in a direction inclined at 60° to the ground, find the work done by him. (g=9.8m/s2)?
A. 400J
B. 1960J
C. 250J
D. 400J
9.A person is holding a bucket by applying a force of 10N. He moves a horizontal distance of 5m and then climbs up a vertical distance of 10m. Find the total work done by him?
A. 50J
B. 150J
C. 100J
D. 50J
10. A bullet fired from a gun can pierce a target due to its?
A. Mechanical energy
B. Heat energy
C. Kinetic energy
D. Mechanical energy
11.When force and displacement are in the same direction, the kinetic energy of the body?
A. Increases
B. Decreases
C. Remains constant
D. Increases
12.The momentum of a body of mass 5kg is 500kgm/s. Find its kinetic energy?
A. 2×105 J
B. 2.5×104 J
C. 2.5×105 J
D. 2×105 J
13.A bullet of mass 20g is found to pass two points 30m apart in a time interval of 4s. Calculate the kinetic energy of the bullet if it moves with constant speed.
A. 2.5J
B. 5J
C. 0.562J
D. 2.5J
14.What energy does a stretched bow posses?
A. Kinetic energy
B. Gravitational energy
C. Elastic potential energy
D. Kinetic energy
15.Which of the following is not a conservative force?
A. Elastic force
B. Gravitational force
C. Force of friction
D. Elastic force
16.Calculate the velocity of the bob of a simple pendulum at its mean position if it is able to rise to a vertical height of 10cm. Take g = 9.8m/s2?
A. 5m/s
B. 1.5m/s
C. 14m/s
D. 5m/s
17.How high must the body be lifted to gain an amount of potential energy equal to the kinetic energy it has when moving at a speed of 20m/s? g=9.8m/s2?
A. 20m
B. 20.0m
C. 202m
D. 20m
18.A ball is thrown vertically upwards with a velocity of 20m/s. At what height, will its kinetic energy be half its original value?
A. 10.20m
B. 10m
C. 15m
D. 10.20m
19.How much mass is converted into energy per day in Tarapur nuclear power plant operated at 107 kW?
A. 10g
B. 9g
C. 9.6g
D. 10g
20.A machine gun fires 60 bullets per minute, with a velocity of 700m/s. If each bullet has a mass of 50g, find the power developed by the gun.
A. 1225W
B. 12250W
C. 122.5W
D. 1225W
21.Which of the following is an example of inelastic collision?
A. Collision between two vehicles
B. Collision between glass balls
C. A bullet fired into a wooden block
D. Collision between two vehicles
22.Mud thrown on a wall and sticking to it is an example for?
A. Inelastic collision
B. Elastic collision
C. Super elastic collision
D. Inelastic collision
23.Collision between two carom coins is an example for?
A. Oblique collision
B. Perfectly inelastic collision
C. Inelastic collision
D. Oblique collision
24.When a light body collides with a massive body at rest?
A. The light body rebounds after the collision
B. The light body Remains at rest
C. The massive body rebounds after the collision
D. The light body rebounds after the collision
25.When a massive body collides against a light body at rest?
A. The light body starts moving
B. The light body rebounds
C. The velocity of the bodies get exchanged
D. The light body starts moving
26.If a force acts perpendicular to the direction of motion of a body, what is the amount of work done?
A. Sinθ
B. Zero
C. Constant
D. Sinθ
27.In which of the following the momentum and energy of each body not conserved?
A. Inelastic collision
B. Oblique collision
C. Elastic collision
D. Inelastic collision
28.In an elastic collision of two billiard balls, the total kinetic energy is conserved?
A. Completely
B. For a short duration
C. For a long duration but not completely
D. Completely
29.Which of the following is an example for a force which does work on a body but fails to change its kinetic energy?
A. A body pulled through a plain surface
B. A body pulled through a vertical surface
C. A body pulled through a horizontal surface
D. A body pulled through a plain surface
30.Two masses of 1g and 4g are moving with equal kinetic energy. The ratio of the magnitudes of their momenta is?
A. 4:1
B. √2:1
C. 1:2
D. 4:1
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