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Write the important properties of th...

Write the important properties of thermal radiations .

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(i) Thermal radiations are EM waves having wavelength range 1 nm to 100 mm. It is also called IR waves .
(ii) They travel in straight lines.
(ii) It obeys the laws of reflection and refraction
(iv ) It show thhe phenomenon of interference,
(v) It produces heat when they fall on the substance
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