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

During the projectile motion, the horizontal component of velocity

Question # 2

When the mass of the colliding body is much larger than the mass of the body at rest, its velocity after collision.

Question # 3

For a fixed force, larger is the mass of a body the

Question # 4

Blomass includes:

Question # 5

A the top of the trajectory of a projectile, the directions of its velocity and acceleration are

Question # 6

A body of mass 5 kg is acted upon by a total change n momentum will be:

Question # 7

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 # 8

In the expression F x t, the force F is

Question # 9

If rope of lift breaks suddenly. The tension exerted by the surface of lift is (a=Acceleration of lift)

Question # 10

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 # 11

The short distance between two points direction from its initial point to final point is called:

Question # 12

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

Question # 13

A ball of mass m moving with uniform speed collides elastically with another stationary ball. The incident ball will lose maximum kinetic energy when mass of the stationary ball is

Question # 14

Ethanol (alcohol) is a type of:

Question # 15

Dimensions of velocity are

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 Laws of motion are not valid in a system which is
A. inertial
B. non-interial
C. at rest
D. moving with uniform velocity
2 Two projectiles are fired from the same point with the same speed at angles of projection 60° and 30° respectively. Which one of the following is true?
A. Their range will be same
B. Their maximum height will be same
C. Their landing velocity will be same
D. Their time of flight will be same
3 The time rate of change of displacement is called:
A. Time
B. Acceleration
C. Speed
D. Velocity
4 Which one of the following is dimensionless.
A. Acceleration
B. Velocity
C. Density
D. Angle
5 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
6 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
7 Two bullets are fired simultaneously, horizontally and with different speeds from the same place. Which bullet will hit the ground first?
A. The faster one
B. Depends on their mass
C. The slower one
D. Both will reach simultaneously
8 The magnitude of the displacement is a line from initial position to final position which is
A. straight
B. curved
C. either be curved or straight
D. none of them
9 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
10 The instantaneous velocity is define as the limiting value of Δd/Δt on the time intervalΔt approaches to
A. zero
B. maximum
C. minimum
D. infinity

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