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Q.

Excited hydrogen atom emits light in the ultraviolet region at 2.47×1015Hz With this frequency, the energy of a single photon is (Given : h=6.63×10−34Js

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a

1.640×10−18J

b

8.041×10−40J

c

6.111×10−17J

d

2.680×10−19J

answer is C.

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Detailed Solution

E=hv=6.63×10−34Js2.47×1015s−1=1.64×10−18J

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