Name the types of e.m. radiations which (i) are used in destroying can

1.	Name the types of e.m. radiations which (i) are used in destroying cancer cells, (ii) cause tanning of the skin and (iii) maintain the earth's warmth. Write briefly a method of producing any one of these waves.
Answer» (i) γ rays (or X-rays) (ii) Ultraviolet rays (iii) Infrared rays Production : Rays : (Radioactive decay of nuclei) X-rays : (X-ray tubes or inner shell electrons) UV- rays : (Movement from one inner energy level to another) Infrared rays : (Vibration of atoms and molecules)

Name the types of e.m. radiations which (i) are used in destroying cancer cells, (ii) cause tanning of the skin and (iii) maintain the earth's warmth. Write briefly a method of producing any one of these waves.

Answer»

(i) γ rays (or X-rays)

(ii) Ultraviolet rays

(iii) Infrared rays

Production :

Rays : (Radioactive decay of nuclei)

X-rays : (X-ray tubes or inner shell electrons)

UV- rays : (Movement from one inner energy level to another)

Infrared rays : (Vibration of atoms and molecules)