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An electron makes a transition from orbi...

An electron makes a transition from orbit `n = 4` to the orbit `n = 2` of a hydrogen atom. The wave number of the emitted radiations `(R =` Rydberg's constant) will be

A

`(2R)/16`

B

`(3R)/16`

C

`(4R)/16`

D

`(5R)/16`

Text Solution

Verified by Experts

The correct Answer is:
B
`bar(lambda)=R(1/p^(2)-1/n^(2))=R(1/4-1/16)=(3R)/16`
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