The ratio of the energy of a photon of ...

The ratio of the energy of a photon of `200Å` wavelength radiation to that of `400Å` radiation is :

A

`(1)/(4)`

B

4

C

`(1)/(2)`

D

2

Verified by Experts

The correct Answer is:

D

`E=(hc)/(lambda)rArr (E_(1))/(E_(2))=(lambda_(2))/(lambda_(1))=2`

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