Which of the following types of glass can cut off ultraviolet rays?

Correct answer: (d) Crookes Glass

Explanation

Crookes glass contains cerium oxide and silica, which sharply absorb harmful ultraviolet (UV) rays.

This makes it ideal for sunglasses that cut off UV radiation.

Soda glass (window glass) and Pyrex (borosilicate) do not block UV the way Crookes glass does.