ECAT Pre Computer Science Chapter 3 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 3 Motion and Force

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ECAT Physics Chapter 3 Motion and Force

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Question # 1

The magnitude of the force producing an acceleration of 10 m/sec2in a body of mass 500 grams is:

Question # 2

One newton is a force that produces an acceleration of 0.5 m/sec2in a body of mass:

Question # 3

The direction of the acceleration is the same as that of

Question # 4

Newton's first law is also called:

Question # 5

When a bicycle is in motion, the frictional forces exerted by the ground are

Question # 6

When a bicycle is in motion but not pedaled, the force of friction exerted by the ground on the two wheels is such that it acts

Question # 7

A body of mass 5 kg is acted upon by a constant force of 20 n for 7 seconds. The total change in momentum will be:

Question # 8

The collision in which KE is conserved but momentum is not conserved is called:

Question # 9

The shortest distance between two points directed from its initial point to final point is called:

Question # 10

The slopes of the tangent at any point on the curve gives the value of the

Question # 11

If the instantaneous velocity of a body does not change. the body is said to be moving with

Question # 12

One KWh is equal to:

Question # 13

Acceleration of a body is positive, if the velocity of the body is

Question # 14

The area under line velocity-time graph is numerically equal to the

Question # 15

Slope of velocity-time graph represents:

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Sr.# Question Answer
1 When a bicycle is in motion but not pedaled, the force of friction exerted by the ground on the two wheels is such that it acts
A. In the backward direction on the front wheel and in the forward direction on the rear wheel
B. In the forwards directions on the front wheel and in the backward direction on the rear wheel
C. In the forward direction on both the wheels
D. In the backward direction on both the wheels
2 When a body is moving on a surface, the force of friction is called
A. Static friction
B. Dynamic friction
C. Limiting friction
D. Rolling friction
3 An inertial frame of reference is that frame of reference in which
A. a = 0
B. a > 0
C. a < 0
D. all of them
4 At the top of the trajectory of a projectile the acceleration is
A. The maximum
B. The minimum
C. Zero
D. g
5 Acceleration of a body is positive, if the velocity of the body is
A. constant
B. increasing
C. decreasing
D. none of them
6 The consumption of energy by a 1000 watt heter in half an hour is:
A. 5 Kwh
B. 0.5 Kwh
C. 2.5 Kwh
D. 3.2 Kwh
7 When we consider the average velocity of a body, then the body is moving in
A. straight line
B. curved path
C. may be in a straight or curved path
D. none of them
8 A body is thrown from a height h with speed u, it hits the ground with speed V
A. The value of V is maximum if the body is thrown vertically downward
B. The value of V is maximum if the body is thrown vertically upwards
C. The value of V is minimum if the body is thrown horizontally
D. The value of V does not depend on the direction of which it is thrown
9 Acceleration of a body at any particular instant during its motion is known as
A. average acceleration
B. uniform acceleration
C. instantaneous acceleration
D. all of them
10 An object is dropped from a height of 100 m. Its velocity at the moment it touches the ground is:
A. 100 m/sec
B. 140 m/sec
C. 1960 m/sec
D. 196 m/sec

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