Question

Wavelength of gamma rays are :

• A. ${10}^{-10}m$ to less than ${10}^{-14}m$
• B. ${10}^{-14}m$ to less than ${10}^{-10}m$
• C. ${10}^{-11}m$ to less than ${10}^{-14}m$
• D. ${10}^{-14}m$ to less than ${10}^{-6}m$

Answer 1

The correct option is A ${10}^{-10}m$ to less than ${10}^{-14}m$

Electromagnetic radiations are present all around us in different forms such as microwaves, radio waves, gamma rays, and X-rays. These radiations can be defined as a form of energy produced by the movement of electrically charged particles that can be found in matter or vacuum or by oscillating magnetic or electric disturbance.

Properties of electromagnetic radiations :

1) They travel through empty space

2) The speed of light always remains constant i.e. 2.99792458 X 10 8 m/s.

3) Wavelength is the measure between the distance of either troughs or crests. Its symbol is 'Lambda'.

Gamma rays have no mass. They arise from the high-frequency end of the electromagnetic spectrum. They have the highest penetration power. They are at least ionizing. The Gamma rays carry a large amount of energy and can travel through the thick and thin material. Gamma rays have frequencies greater than about 1018 cycles per second or Hertz. They have wavelengths of less than 100 picometer. Gamma rays can kill living cells. It is used to kill cancerous cells. They can also kill bacteria.