Question

Name the types of electromagnetic radiations which

(i) are used in destroying cancer cells
(ii) cause tanning of the skin
(iii) maintain the earth.s warmth.

Write briefly a method of producing any one of these waves.

Answer 1

Gamma rays, UV rays, and IR rays are the types of electromagnetic radiation used in destroying cancer cells, causing tanning of the skin, and maintaining the Earth's warmth.

Step-by-step explanation:

The types of electromagnetic radiations that are used in destroying cancer cells, cause tanning of the skin, and maintain the Earth's warmth are:

1. Gamma rays: Gamma rays are used in radiation therapy to kill cancer cells. They have high energy and can penetrate deep into tissues.
2. Ultraviolet (UV) rays: UV rays cause tanning of the skin. They have shorter wavelengths and higher energy than visible light.
3. Infrared (IR) rays: IR rays are responsible for maintaining the Earth's warmth. They have longer wavelengths than visible light and are emitted by objects due to their temperature.

A method of producing gamma rays is through the decay of radioactive materials such as cobalt-60 or the use of particle accelerators.