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

Conventional the angular Velocity is Directed at an angle of:

Question # 2

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

Question # 3

An axis of rotation

Question # 4

The number of "Earth stations" which transmit signals to satellites and receive signals from them are:

Question # 5

Final velocity of a hoop is __________ the final velocity of a disc having same mass and radius on coming down an inclined plane.

Question # 6

The useful unit of the angular displacement in SI unit is:

Question # 7

When angular acceleration is positive, the body rotates:

Question # 8

Satellites are held in orbits around Earth by its:

Question # 9

Radian is defined as the angle subtended at the center of a circle by an arc of:

Question # 10

When an object moves with a uniform angular velocity, then its instantaneous angular velocity is equal to:

Question # 11

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 # 12

The center of mass of a sphere lies at:

Question # 13

Conventionally the angular velocity is directed to an angle of:

Question # 14

The angular speed of a particle moving along a circular path is 5 Pie rad sec-1, Its period of motion is:

Question # 15

A rotating body tends to be slower, when its angular acceleration is:

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ECAT Physics Chapter 5 Important MCQ's

Sr.# Question Answer
1 One radian is:
A. Greater than one degree
B. Less than one degree
C. Equal to one degree
D. None of them
2 Conventionally 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 the above
3 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
4 Moment of inertia depends upon:
A. Mass
B. Selection of axis of rotation
C. Both of them
D. None of these
5 A car is turning around a corner at 10 m/sec as it travels along an arc of a 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
6 When body moves along a circular path with constant speed, it has an acceleration, which is always directed;
A. Along the tangent
B. Towards the centre
C. Away from the centre
D. None of them
7 The useful unit of angular replacement in SI unit is:
A. Degree
B. Revolution
C. Radian
D. Metre
8 INTELSAT operates at frequencies 4, 6, 11, 14 having unit of:
A. KHz
B. MHz
C. GHz
D. BHz
9 A stone tied to the end of a 20 cm long string is whirled in a horizontal circle. If centripetal acceleration is 9.8 m/sec2, then its angular velocity is rad/sec is:
A. 22/7
B. 7
C. 14
D. 21
10 Direction of motion ______ in circular motion:
A. Changes off and on
B. Changes continuously
C. Does not change
D. None of them

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