Question

Assertion: Sound waves cannot propagate through vacuum but light waves can.
Reason: Sound waves cannot be polarised but light waves can be.

• A. If both Assertion and Reason are true and the Reason is a correct explanation of the Assertion
• B. If both Assertion and Reason are true but Reason is not a correct explanation of the Assertion
• C. If Assertion is true but the Reason is false
• D. If both Assertion and Reason are false

Answer 1

Answer: (B)

Sound waves are longitudinal in nature and light waves are transverse in character. Moreover light wave is electromagnetic in nature. That’s why light waves do not need a material medium for its propagation.