Question

Assertion: When a convex lens made of glass is completely immersed in water, its focal length increases.

Reason: Refractive index of glass with respect to water is greater than that of glass with respect to air.

Options

• Both Assertion and Reason are true and Reason is the correct explanation for Assertion.

• Both Assertion and Reason are true but Reason is not the correct explanation for Assertion.

• Assertion is true and Reason is false.

• Both Assertion and Reason are false.

Answer 1

Assertion is true and Reason is false.

Explanation:

Focal length increases in water as the refractive index contrast between glass and water is lower.