(a) Why are infra-red radiations referred to as heat waves?
(a) Why are infra-red radiations referred to as heat waves? Name the radiations which are next to these radiations in the electromagnetic spectrum having (i) shorter wavelength (ii) longer wavelength.
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(a) Infrared waves are produced by hot bodies and molecules, so are referred to as heat waves.
(i) Em wave having short wavelength than infrared waves are visible, UV, γ-rays and γ-rays.
(ii) Em wave having longer wavelength than infrared waves are microwaves, short radio waves, television and FM radio.
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