The Frame of Reference NEET Questions

Physics - Kinematics

The Frame of Reference MCQ Questions


7.
An object can be treated as a 'point object' (point-like) when:
A.
The object is at rest
B.
The size of the object is much smaller than the distance it moves
C.
The object moves in a straight line
D.
The object moves with uniform velocity
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ANSWER :
B. The size of the object is much smaller than the distance it moves
8.
Which of the following can be treated as a point object?
A.
A spinning cricket ball that turns sharply on hitting the ground
B.
A tumbling beaker slipped off a table
C.
A railway carriage moving without jerks between two stations
D.
Both B and C
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ANSWER :
C. A railway carriage moving without jerks between two stations
9.
An object is moving with constant velocity relative to an inertial frame. In another frame moving with constant velocity relative to the first, the object:

NEET - 2022

A.
Must be at rest.
B.
May be at rest or in motion, depending on the relative velocity.
C.
Cannot be at rest.
D.
Will have accelerated motion.
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ANSWER :
B. May be at rest or in motion, depending on the relative velocity.
10.
In a coordinate system for 1D motion, what does a negative position value indicate?
A.
The object is moving backwards
B.
The object is decelerating
C.
The object is located on the negative side of the chosen origin
D.
The object has negative mass
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ANSWER :
C. The object is located on the negative side of the chosen origin
11.
The choice of origin and positive direction in a reference frame is:
A.
Fixed by nature — cannot be changed
B.
Fixed by SI system
C.
A matter of choice — any convenient choice is valid
D.
Always the same as the direction of motion
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ANSWER :
C. A matter of choice — any convenient choice is valid
12.
Position vector r of a particle in a plane with reference to origin O is given by:
A.
r = xi + yj + zk
B.
r = xi + yj
C.
r = xi
D.
r = x + y
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ANSWER :
B. r = xi + yj