Question

A glass slab, a glass prism, and a convex lens have been prepared from the same transparent material. Then dispersive power is possessed by

• A. Only glass slab
• B. Only glass prism
• C. Both glass slab and glass prism
• D. Glass slab, glass prism and convex lens

Answer 1

The correct option is D

Glass slab, glass prism and convex lens

Explanation of correct option:

1. The dispersive power of an object depends only on the nature of the material it is made up of.
2. It has no relation to the size and shape of the object
3. Therefore if a glass slab, a glass prism, and a convex lens have been prepared from the same transparent material. Then dispersive power possessed by all the three glass slabs, glass prism, and convex lens will be the same.

Thus, dispersive power is possessed by a Glass slab, glass prism, and convex lens.

Hence, the correct option is (D).