Science MCQs

Red + Green + Blue = White light.

A red object reflects red light and absorbs other colors.

A white object reflects all colors of light.

A black object absorbs all colors and reflects almost no light.

The critical angle for glass is approximately 42 degrees.

The critical angle for water is approximately 49 degrees.

Optical fibers use total internal reflection to transmit light signals over long distances.

Optical fibers are used in telecommunications internet and medical imaging.

Prisms in a periscope use total internal reflection to change the direction of light.

Refraction bends light rays from the coin making them visible to the eye.