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

The expression F x t is called impulse if the time 't' is

Question # 2

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

Question # 3

The range of projectile is 50 m whenθ is inclined with horizontal at 15°. What is the range whenθ becomes 45°?

Question # 4

The time rate of change of displacement is called:

Question # 5

A monkey sits on the pan of spring scale kept in an elevator. The reading of the spring scale will be maximum when

Question # 6

Unit of impulse in

Question # 7

Two bodies of masses 1 kg and 5 kg are dropped gently form the top of a tower. A a point 20 cm from the ground both the bodies will have the same

Question # 8

Distance covered by a freely falling body in 2 sec will be

Question # 9

A ball is dropped from a certain height and another ball is projected horizontally from the same point. Which of the following statement is correct?

Question # 10

Inertia mass and gravitational mass are

Question # 11

The dimension of linear inertia is:

Question # 12

A mass of 5kg moves with an acceleration of 10m s-2force applied is

Question # 13

A ball is thrown upwards with a velocity of 100 m/s. It will reach the ground after

Question # 14

Linear momentum is a

Question # 15

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

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 The decrease in velocity per unit time is called:
A. Variable Acceleration
B. Average Acceleration
C. Retardation
D. None of these
2 The velocity given to a body to go out of the influence of earth's gravity is known as:
A. Terminal velocity
B. Orbital velocity
C. Escape velocity
D. None of these
3 The motion of a body in a straight line is the motion in
A. one dimension
B. two dimension
C. three dimension
D. four dimension
4 For maximum linear distance of travel, a projectile must be fired at an angle of
A. 0°
B. 45°
C. 90°
D. 60°
5 A ball is dropped from a height of 4.2 meters. To what height will take it rise if there is no loss of KE after rebounding?
A. 4.2 m
B. 8.4 m
C. 12.6 m
D. none of these
6 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
A. 17 m/s
B. 33 m/s
C. 17.5 m/s
D. none
7 Tick the conservative force:
A. tension in a string
B. Air resistance
C. Elastic spring force
D. Frictional force
8 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)
A. 9.8 m/s
B. 19.6 m/s
C. 39.2 m/s
D. 98.0 m/s
9 A force of 50 dynes is acted on a body of mass 5 g which is at rest, for an interval of 3 seconds, then impulse is
A. 0.15 x 10-3Ns
B. 0.98 x 10-3Ns
C. 1.5 x 10-3Ns
D. 2.5 x 10-3Ns
10 Acceleration produced in a body by a force varies
A. inversely as the applied force
B. directly as the applied force
C. directly as the mass of the body
D. none of them

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