Question

Assertion: The speed of light in different transparent media is different.

Reason: The speed of light in a medium changes with change in temperature of the medium.

Options

• If both Assertion and Reason are true and the Reason is correct explanation of the Assertion.

• If both Assertion and Reason are true, but Reason is not correct explanation of the Assertion.

• If Assertion is true, but the Reason is false.

• If Assertion is false, but the Reason is true.

Answer 1

If both Assertion and Reason are true, but Reason is not correct explanation of the Assertion.

Explanation: 

Speed of light varies in different transparent materials because of their different optical densities. Temperature also influences optical density and speed, so both statements are true, but reason does not explain the assertion.