A substance absorbs electromagnetic radi...

A substance absorbs electromagnetic radiations of wavelength 12.3 nm and then emits another electromagnetic radiations of wavelength 24.6 nm . If ratio of number of photons absorbed to number of photons emitted is `2:1` then ratio of energy absorbed to energy emitted will be :

A

`2:1`

B

`1:1`

C

`4:1`

D

`1:4`

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The correct Answer is:

C

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