(A) : All oscillatory motions are necessarily periodic motion in conservative fields but all periodic motion are not oscillatory.
(R) : Simple pendulum is an example of oscillatory motion.

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Both ‘A’ and ‘R’ are true and ‘R’ is the correct explanation of ‘A’

Both ‘A’ and ‘R’ are true and ‘R’ is not the correct explanation of ‘A’

‘A’ is true and ‘R’ is false

‘A’ is false and ‘R’ is true

answer is B.

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Detailed Solution

An oscillatory motion is always periodic but a periodic motion is not always oscillatory because in oscillatory motion the body repeats its path in equal intervals of time but any body in periodic motion may not do to and fro motion about their mean position.

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