ECAT Pre Computer Science Chapter 5 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 5 Circular Motion

Try The MCQ's Test For ECAT Physics Chapter 5 Circular Motion

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ECAT Physics Chapter 5 Circular Motion

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Question # 1

Angular velocity is a:

Question # 2

A 1000 Kg car travelling with a speed of 90 km/hr turns around a curve of radius 0.1 km. The necessary centripetal force comes out to be:

Question # 3

The center of mass of a sphere lies at:

Question # 4

Direction of motion _________ in circular motion

Question # 5

Centripetal acceleration is also called _______ acceleration:

Question # 6

The net force acting on a 100 kg man standing in an elevator accelerating downward with a = 0.8 m sec-2comes out to:

Question # 7

When a body moves with a constant speed in a circle:

Question # 8

A disc rolls down a hill and its speed at bottom is found to be 11.4 m/sec. Height of the hill is then nearly:

Question # 9

Moment of linear momentum is called.

Question # 10

Direction of motion ______ in circular motion:

Question # 11

A body moving along the circumference of a circle of radius R completes one revolution. The radius of the covered path to the angle subtended at the center is:

Question # 12

A flywheel accelerates from rest to an angular velocity of 7 rad/sec in 7 seconds. Its average acceleration will be:

Question # 13

Centripetal acceleration is also called ______ acceleration

Question # 14

Angular velocity is a:

Question # 15

A point on the rim of a wheel moves 0.2 m where the wheel turns through an angle is 14.3 degrees. The radius of the wheel is:

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ECAT Physics Chapter 5 Important MCQ's

Sr.# Question Answer
1 The rear wheels of an automobile are rotating with an angular velocity of 14 rev/sec which is reduced to 38 rad/sec in 5 second when brakes are applied. Its angular acceleration is:
A. 5 rad/sec2
B. -10 rev/sec2
C. -10 rad/sec2
D. -5 rev/sec2
2 Angular velocity is a:
A. Scalar quantity
B. Vector quantity
C. Complex quantity
D. None of these
3 Angular momentum is a:
A. vector quantity
B. Imaginary quantity
C. Complex Quantity
D. Scalar Quantity
4 Conventional the angular Velocity is Directed at an angle of:
A. 90° to the axis of rotation
B. 30° to the axis of rotation
C. 0° to the axis of rotation
D. None of above
5 INTELSAT operates at frequencies 4, 6, 11, 14 having unit of:
A. KHz
B. MHz
C. GHz
D. BHz
6 The number of "Earth Stations" which transmit signals to satellites and receive signals fro them are
A. 3
B. 24
C. 126
D. 200
7 Satellites are held in orbits around Earth by its:
A. Gravitational field
B. Magnetic field
C. Own orbital motion
D. Own spin motion
8 The center of mass of a sphere lies at:
A. The axis of the sphere
B. Circumference of sphere
C. Center of the sphere
D. None of them
9 Radian is defined as the angle subtended at the center of a circle by an arc of:
A. Length equal to its diameter
B. Length equal to its radius
C. Any length
D. None of these
10 A car is turning around a corner at 10 m/sec as it travels along an arc of circle. If value of centripetal acceleration is 10 m/sec2in this case, find radius of the circular path:
A. 1 m
B. 5 m
C. 10 m
D. 15 m

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