Front

What is the main factor that affects the speed of a wave?

Back

The properties of the medium through which it travels.

Front

What does the 'O' in LOST stand for in optics?

Back

Orientation.

Front

Which type of electromagnetic waves lies between Ultraviolet and Gamma Rays?

Back

X-rays.

Front

What is the law of reflection?

Back

The angle of incidence is equal to the angle of reflection.

Front

What is refraction?

Back

The bending of light as it passes from one medium to another.

Front

What is the formula for calculating the speed of a wave?

Back

Speed = Frequency × Wavelength.

Front

What is total internal reflection?

Back

The complete reflection of a light ray back into a medium when it hits the boundary at an angle greater than the critical angle.

Front

What is the critical angle in optics?

Back

The angle of incidence above which total internal reflection occurs.

Front

What is a concave lens?

Back

A lens that diverges light rays that are initially parallel.

Front

What is a convex lens?

Back

A lens that converges light rays that are initially parallel.