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+1 vote
27.2k views
in Physics by (30.0k points)

If a source of power 4 kW produces 1020 photons/second, the radiation belong to a part of the spectrum called

(1) X–rays

(2) ultraviolet rays

(3) microwaves

(4) γ–rays

1 Answer

+1 vote
by (55.2k points)
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Best answer

1 

The obtained frequency lies in the band of X–rays.

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