Question

Assertion (A): Total internal reflection occurs only when a ray of light passes from a denser medium to a rarer medium.

Reason (R): Critical angle is the angle of incidence in denser medium for which the angle of refraction in rarer medium is 90°.

Options

• Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion.

• Both Assertion (A) and Reason (R) are true but Reason (R) is not the correction explanation of Assertion.

• Assertion (A) is false, but Reason (R) is true.

• Assertion (A) is true, but Reason (R) is false.

Answer 1

Both Assertion (A) and Reason (R) are true but Reason (R) is not the correction explanation of Assertion.

Explanation:

Both statements are true. The reason gives the definition of the critical angle, but it does not explain why total internal reflection requires light to travel from a denser medium to a rarer medium.