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

If a ball comes back to its starting point after bouncing off the wall several times, then its

Question # 2

If the water falls from a dam into a turbine wheel 19.6 m below, then the velocity of water at the turbine, is (Take g=9.8 m/s2)

Question # 3

If the acceleration of a body is not uniform, then velocity-time graph will be:

Question # 4

Root out the conventional source of energy:

Question # 5

When a person jumps off the ground, the reaction force of the ground is

Question # 6

If m is the mass of the gases ejected per second with velocity v relative to the rocket of mass M, then the acceleration of rocket is

Question # 7

To get a resultant displacement of 10 m, two displacement vectors of magnitude 6 m and 8 m should be combined

Question # 8

The second law gives the relationship between

Question # 9

When brakes are applied to a fast moving car, the passenger will be thrown:

Question # 10

If an iron ball and a wooden ball of the same radius was released from a height 'h' in vacuum, then time taken by both of them to reach ground will be

Question # 11

Acceleration in a body is always produced in the direction of :

Question # 12

Maximum height of a bullet when fixed at 30 with horizontal is 11 m. Then height when it is fired at 60° is

Question # 13

The velocity given to a body to go out of the influence of earth's gravity is known as:

Question # 14

Earth is considered to be

Question # 15

Ethanol (alcohol) is a type of:

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ECAT Class Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 When a person jumps off the ground, the reaction force of the ground is
A. greater than the weight of the person
B. smaller than the weight of the person
C. equal to the weight of the person
D. zero
2 A 5 kg mass is falling freely, the force acting on, it will be
A. 19.6 N
B. 9.8 N
C. 5 N
D. Zero
3 The motion in a plane is the motion in
A. one dimension
B. two dimension
C. three dimension
D. four dimension
4 The distance covered by a body in unit time is called.
A. Displacement
B. speed
C. Velocity
D. Both B and C
5 In above figures, tell which set of graphs shows that a body is moving with uniform velocity:
A. (i) and (ii)
B. (ii) and (iii)
C. (iii) and (iv)
6 Newton's first law is also called:
A. Law of torque
B. Law of force
C. Law of inertia
D. None of these
7 A dirty carpet is to be cleaned by heating. This is an accordance with____ law of motion:
A. First
B. Second
C. Third
D. None of these
8 Newton published laws of motion in his famous book "principia" in
A. 1867
B. 1667
C. 1676
D. 1687
9 Linear momentum is a
A. fixed quantity
B. constant quantity
C. scalar quantity
D. vector quantity
10 A typical rocket consists of fuel
A. more than 60% of launch mass
B. less than 60% of launch mass
C. less than 80% of launch mass
D. more than 80% of launch mass

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