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Electromagnetic waves with wavelength ...

Electromagnetic waves with wavelength
(i) `lambda_1` is used in satellite communication.
(ii) `lambda_2` used to kill germs in water purifier.
`lambda_` used to detect leakage of oil in underground pipelines.
`lambda_4` used to improve visibility in runways during fog and mist conditions.
(a) Identify and name the part of e.m. spectrum to which these radiations belong.
(b) Arrange these wavelengths in ascending order of their magnitude.
(c) Write one more application of each.

Text Solution

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(A) `lamda_1 to ` microwave
`lamda_2 to ` ultraviolet rays
`lamda_3 to ` X - rays
` lamda_4 to ` infrared waves
According to wavelength
(b) X - rays < ultraviolet < infrared < microwave
` therefore lamda_3 lt lamda_2 lt lamda_4 lt lamda_1`
(c ) Microwaves are used in radar .
Ultraviolet waves make a use in UV lamps used in hospitals to sterilise sugical equipments and the air in openrating theatres .
W - rays are used to identify fractures in bones .
infrared waves are used in remote controls.
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