Pick the correct number from the given options.

Based on the amount of light that passes through the material, they are classified into _____types.

 

Based on the amount of light that passes through the material, they are classified into 3 types. Transparent, translucent, and opaque.

• Ojects through which light can pass easily are called transparent objects e.g. clear water, or pure glass.
• Objects through which light can pass partially are called translucent objects e.g. tracing paper, and waxed paper.
• Objects which do not allow the light to pass through are called opaque objects e.g. wood, or stone.

Therefore, '3' is the correct response.