Physics · Wave motion, longitudinal and transverse waves, speed of the travelling wave, displacement relation for a progressive wave
Assertion Sound waves cannot be polarised. Reason Sound waves are longitudinal i
Assertion Sound waves cannot be polarised. Reason Sound waves are longitudinal in nature.
- A. If both assertion and reason are true and reason is the correct explanation of assertion.
- B. If both assertion and reason are true and reason is not the correct explanation of assertion.
- C. If assertion is true but reason is false.
- D. If both assertion and reason are false.
Step-by-step solution
Polarisation is a property exclusive to transverse waves, where oscillations are perpendicular to propagation direction. Sound waves are longitudinal, with oscillations parallel to propagation, so they cannot be polarised. Hence, both assertion and reason are true, and the reason correctly explains the assertion.
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