Question

Select the correct statements.
(a) A simple harmonic motion is necessarily periodic.
(b) A simple harmonic motion is necessarily oscillatory.
(c) An oscillatory motion is necessarily periodic.
(d) A periodic motion is necessarily oscillatory.

Answer 1

Periodic motion are those motion which repeats themselves after the regular intervals of the time.

Oscillatory motion is the Particular case of the Periodic Motion. But actully all oscillatory are not periodic.

In Almost Cases, all oscillatory are periodic motions since it is the case of Periodic motion, but in some cases in which energy is lost, oscillatory motions are not periodic, since, they stops due to loss in energy, and hence does not repeats itself. Therefore, Option (c). is incorrect.

Simple Harmonic Motion is the case of the Oscillatory motion which is also periodic.

Hence, Option (a). and (b) are correct.

Now, All Periodic is not oscillatory. For example, Revolution of earthy is not oscillatory, but periodic.  Therefore, Option (d). is incorrect.

Hope it helps.

Answer 2

heLlo pPl ❄
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ansWer ⤵️⤵️⤵️

option A and B are correct
A. a simple harmonic motion is necessarily periodic
B. a simple harmonic motion is necessarily oscillatory

hence go for this option
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# devilln ❤