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A hydrogen atom moving at a speed v abso...

A hydrogen atom moving at a speed v absorbs a photon of wavelength 122 nm and stops. Find the value of v. Mass of a hydrogen atom = ` 1.67 xx 10^-27kg`.

A

`(h)/(lamdam)`

B

`(lamda)/(hm)`

C

`(m)/(lamda)`

D

None of these

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A
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