Describe the relationship between energy and frequency of the electromagnetic radiations.

If a man wishes to use a plane mirror on a wall to view both his head and his feet as he stands in front of the mirror, what should be the required length of the mirror?

While testing an electric motor that you made in school, you removed one of the dry cells, what happens to its commutator?

A converging lens is used to form a sharp image of a lighted candle. What will happen to the image if the lower half of the lens is covered by a piece of paper?

Describe the image produced by a concave mirror used by a dentist to clearly see the images of our teeth.

How do you describe the image produced by a simple microscope?

How does the wavelength of infrared (IR) compare with the wavelength of ultraviolet (UV) waves?

What is the distance of your image from you if you stand 1.5 m in front of a plane mirror?

What are the characteristics of the image formed by an object placed between the focal point and optical center of a converging lens?

What happens to the light rays that reflect from the mirror in the illustration?

Electromagnetic waves have the same speed but different: (2 words)

It is an optical device used to see very far or distant objects clearly.