Which law of Newton defines an ‘inertial frame of reference’?
A
First law of motion
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B
Second law of motion
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C
Third law of motion
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D
Law of gravitation
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Solution
The correct option is A First law of motion Newton's first law of motion defines an inertial frame of reference which tells that a body remains at rest to a frame or in a motion with respect to a frame unless any external force doesn't applied on it. The frame can be at rest or can move with constant velocity.