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Question

A type of electromagnetic wave has wavelength 50A.
(i) Name the wave.
(ii) What is the speed of the wave in vacuum ?
(iii) State one use of this type of wave.

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Solution

(i) X-­Ray has wavelength 50A.
(ii) The speed of the wave in vacuum is 3×108m/s.
(iii) X­-Rays are used for detection of fracture in bones.

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