Physics -Mock Test
Quiz by Arushi Bhardwaj
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- Q1
Write the C.G.S unit of force.
Newton
Kilogram Force
Dyne
Poundal
20s - Q2
Assertion- The average speed of an object may be equal to the arithmetic mean of individual speed
Reason-Average speed is equal to the total distance traveled divided by the total time taken.
The assertion is false to reason is true
The reason is True Assertion is False
Both assertion and reason are true and the reason is the correct explanation of the assertion
Both assertion and reason are true but the reason is not the correct explanation of the assertion
20s - Q3
When a ball is dropped from a height, its speed increases gradually. Name the force which causes this change in speed.
Electrostatic Force
Friction Force
Magnetic Force
Gravitational Force
20s - Q4
A feather of mass 10kg is dropped from a height. It is found to fall down with constant velocity. What is the net force acting on it?
0
10
12.5
15
20s - Q5
When the distance travelled by a body is directly proportional to the square of time taken,the motion of the body is
uniformly accelerated
circular
zig zag
uniform
20s - Q6
A moving train is brought to rest within 20 seconds by applying brakes. If the retardation due to brakes is 2m/s2 then the initial velocity was:-
60 m/s
65 m/s
45m/s
40 m/s
30s - Q7
"The sparks produced during the sharpening of the razor against the grinding wheel leave the rim of the wheel tangentially" is an example of which type of inertia?
Inertia of motion
Inertia of rest
Inertia of direction
20s - Q8
A person is standing in an elevator.In which situation he finds his weight less than actual when
The elevator moves upward with constant acceleration
The elevator moves downward with uniform velocity
The elevator moves downward with constant acceleration.
The elevator moves upward with uniform velocity
20s - Q9
A body of mass m kg starts from rest and travels a distance of s m in t seconds. The force acting on it is:-
(m s2/2t)N
ms/t N
ms2/t N
(2m s/t2) N
30s - Q10
During a football match, the ball shot towards the goal struck the defender's foot at the speed of 10 m/s, and bounces back at 20m/s.If the time of impact was 0.2sand the massif the ball is 1/2 kg, then the average force exerted by a defender on the ball is
35 N
75 N
50 N
40 N
30s