Grade 8 CBSE Light Flashcard

Front

What are the laws of reflection of light?

Back

The laws of reflection state that: 1) The angle of incidence is equal to the angle of reflection. 2) The incident ray, reflected ray, and normal all lie in the same plane.

Front

What is a kaleidoscope used for?

Back

A kaleidoscope is an optical device used to see objects that are not along the line of sight, creating beautiful patterns through reflection.

Front

What is the perpendicular line drawn to the reflecting surface called?

Back

The perpendicular line drawn to the reflecting surface is called the 'normal'.

Front

What is the angle of incidence?

Back

The angle of incidence is the angle between the incident ray and the normal at the point of incidence.

Front

Are rods sensitive to bright light?

Back

No, rods are not sensitive to bright light; they are more sensitive to low light levels.

Front

What is the angle of reflection?

Back

The angle of reflection is the angle between the reflected ray and the normal at the point of incidence.

Front

What happens to light when it hits a reflective surface?

Back

When light hits a reflective surface, it bounces back according to the laws of reflection.

Front

What is the difference between incident ray and reflected ray?

Back

The incident ray is the incoming ray that strikes the surface, while the reflected ray is the ray that bounces off the surface.

Front

What is dispersion of light?

Back

Dispersion of light is the process in which white light separates into its constituent colors when passing through a prism.

Front

What is the role of the normal in reflection?

Back

The normal serves as a reference line to measure angles of incidence and reflection.