Question

Fill in the blank spaces by choosing the correct word.

A prism is a piece of transparent material having three rectangular surfaces and .......... triangular surfaces.

• A. $three$
• B. $two$
• C. $four$
• D. $one$

Answer 1

The correct option is B $two$

A prism is a piece of transparent material bounded by three rectangular surfaces forming a triangle. The opaque surface is called the base. The other two surfaces are transparent and are called refracting surfaces. The angle between the two refracting surfaces is called the angle of the prism.
Hence, a prism is a piece of transparent material having three rectangular surfaces and two triangular surfaces.