ECAT Pre Engineering Physics Chapter 3 MCQ Test With Answer

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

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Physics ECAT Pre Engineering Chapter 3 Motion and Force

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Question # 1

When a body is moving with uniform positive acceleration, the velocity- time graph is a straight line. Its slope is

Question # 2

During the upward motion of the projectile, the vertical component of velocity.

Question # 3

When two protons are brought closer potential energy of both of them:

Question # 4

Force is a:

Question # 5

A body moving with uniform velocity has

Question # 6

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

Question # 7

A person is sitting in a traveling train and facing the engine. He tosses up a coin and the coin falls behind him. It can be concluded that the train is

Question # 8

A body whose momentum is constant must have constant

Question # 9

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

Question # 10

If the acceleration of a body is negative, then slope of the velocity-time graph will be:

Question # 11

A train is moving with a velocity of 25 m/s and a car is moving behind it by a velocity of 8 m/s in same direction. The relative velocity of train with respect to car is

Question # 12

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

Question # 13

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

Question # 14

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

Question # 15

Dimensions of velocity are

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 Which of the following is not a projectile
A. a bullet fired from a gun
B. a space ship
C. a football in air
D. an artillery shell
2 Tick the conservative force:
A. tension in a string
B. Air resistance
C. Elastic spring force
D. Frictional force
3 The sum of the magnitude of two forces acting at a point is 18 and the magnitude of their resultant is 12. If the resultant is at 90° with the force of the smaller magnitude, then their magnitudes are
A. 3, 15
B. 4, 14
C. 5, 13
D. 6, 12
4 In velocity of a particle at an instant is 10 m/s and after 5s the velocity of the particle is 20 m/s. The velocity 3s before in m/s is
A. 8
B. 4
C. 6
D. 7
5 Force is a:
A. Scalar quantity
B. Base quantity
C. Derived quantity
D. None of these
6 When the mass of the colliding body is much larger than the mass of the body at rest, its velocity after collision.
A. Becomes half
B. Becomes zero
C. Ramains same
D. Becomes double
7 If rope of lift breaks suddenly. The tension exerted by the surface of lift is (a=Acceleration of lift)
A. mg
B. m (g+a)
C. m (g - a)
D. 0
8 If two bodies of equal masses moving in the same direction collide elastically, then their velocities.
A. Are added
B. Are subtracted
C. Do not change
D. Are exchanged
9 A cold soft drink is kept on the balance. When the cap is opened, then the weight
A. Increases
B. Decreases
C. First increases, then decreases
D. Remains same
10 When a shall explodes a mid-air, the total momentum of its fragments is
A. less than the momentum of shell
B. equal to the momentum of shell
C. greater than the momentum of shell
D. none of them

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