NEET Physics Question - Waves - Sound Wave and its Characteristics

Assertion (A): Sound waves cannot propagate through vacuum but light waves can.

Reason (R): Sound waves cannot be polarised but light waves can be.

Both (A) & (R) are true and the (R) is the correct explanation of the (A)

Both (A) & (R) are true but the (R) is not the correct explanation of the (A)

(A) is true but (R) is false

Both (A) and (R) are false

Solution:

Assertion (A) is true because sound waves are mechanical and require a medium, whereas light waves are electromagnetic and can propagate in vacuum.

Reason (R) is true as sound waves are longitudinal and cannot be polarised, while light waves are transverse and can be polarised. However, the ability to polarise is unrelated to propagation through a vacuum.

Thus, (R) is not the correct explanation of (A).

Rankers Physics

Sound and Light Waves in Vacuum

Solution:

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