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 we consider the average velocity of a body, then the body is moving in

Question # 2

An object is dropped from a height of 100 m. Its velocity at the moment it touches the ground is:

Question # 3

Acceleration of a body is negative if the velocity of the body is

Question # 4

The direction of velocity is along the direction of

Question # 5

The time rate of change of displacement is called:

Question # 6

For maximum linear distance of travel, a projectile must be fired at an angle of

Question # 7

Which one of the following is dimensionless:

Question # 8

Rocket engines lift a rocket from the earth surface, because hot gas with high velocity

Question # 9

The mass of a body measured by a physical balance in a lift at rest is found to be m, if the lift is going up with an acceleration a, its mass will be measured as

Question # 10

A train cover 90 km in half an hour. the time taken by it to travel 15 km will be:

Question # 11

A body of weight 1 N has a kinetic energy of 1 joule when its speed is:

Question # 12

Earth is considered to be

Question # 13

A body is thrown from a height h with speed u, it hits the ground with speed V

Question # 14

When a shell explodes in mid-air, its fragments fly off in

Question # 15

Two bullets are fired simultaneously, horizontally and with different speeds from the same place. Which bullet will hit the ground first?

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 The vertical and horizontal range will be equal id angle of projection is
A. 76°
B. 45°
C. 60°
D. 120°
2 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
3 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
4 Slope of velocity-time graph represents:
A. Acceleration
B. Speed
C. Torque
D. Work
5 The artillery shells travel along parabolic paths under the influence of
A. magnetic field
B. electric field
C. electromagnetic field
D. gravitational field
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 At the top of the trajectory of a projectile the acceleration is
A. The maximum
B. The minimum
C. Zero
D. g
8 A body of weight 1 N has a kinetic energy of 1 joule when its speed is:
A. 1.46 m sec-1
B. 2.44 m sec-1
C. 3.42 m sec-1
D. 4.43 m sec-1
9 The motion in a plane is the motion in
A. one dimension
B. two dimension
C. three dimension
D. four dimension
10 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:
A. 10 NS
B. 100 NS
C. 140 NS
D. 200 NS

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