Question

Assertion (A): In a prism, the refraction of light occurs at two inclined faces, so the emergent ray is parallel to the incident ray.

Reason (R): In a parallel sided glass slab, the refraction of light occurs at two parallel faces, so the emergent ray is parallel to the incident ray.

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

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

Explanation:

Assertion (A) is false because the inclined faces of a prism generally cause the emergent ray to deviate from the incident ray, so they are not parallel.

Reason (R) is true because parallel faces of a glass slab make the emergent ray parallel to the incident ray.