State the approximate range of wavelength associated with (i) the ultraviolet rays, (ii) the visible light and (iii) infrared rays.

The cut and paste operations copy data from the source range to a target range and erase it from the source range.

(a) Gamma rays, X-rays, infrared rays, micro waves, radio waves. (b) Microwave is used for satellite communication.

4000 Å to 8000 Å .

(i)Microwaves are used for satellite communication. (ii)Ultraviolet radiations are used for detecting the purity of gems, eggs, ghee etc. (iii)Infrared radiations are used in remote control of television and other gadgets. (iv)Gamma rays...

All heated bodies such as a heated iron ball, flame, fire etc., are the sources of infrared radiations. The electric arc and sparks give ultraviolet radiations.

(a) Ultraviolet radiations travel in a straight line with a speed of 3 x 108 m in air (or vacuum). (b) They obey the laws of reflection and refraction. (c) They affect...

(a) Ultraviolet radiations produce fluorescence on striking a zinc sulphide screen. (b) They cause health hazards like cancer on the body.

(a) Infrared radiations travel in straight line as light does, with a speed equal to 3 x 108m/s in vacuum. (b) They obey the laws of reflection and refraction. (c) They do...

(a) Infrared radiations are invisible. (b) They do not affect the ordinary photographic film.

Microwaves < Infrared rays < Ultraviolet rays < y -rays.