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The effective mass of a photon of the wa...

The effective mass of a photon of the wavelength of the radiation 3000 Å is

A

`7.4xx10^(-36)` kg

B

`4.7xx10^(-36)` kg

C

`8.4xx10^(-36)` kg

D

`6.4xx10^(-36)` kg

Text Solution

Verified by Experts

The correct Answer is:
A
`E=mc^(2)=(hc)/lambda`
`:. m =h/(c lambda)=(6.63xx10^(-34))/(3xx10^(8) xx3xx10^(-7))`
`=7.4xx10^(-36)` kg
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