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If the radius of first Bohr's orbit is x...

If the radius of first Bohr's orbit is x,then de-broglie wavelength of electron in 3rd orbit is nearly

A

`2pir`

B

`6pir`

C

9x

D

` (x)/(9)`

Text Solution

Verified by Experts

The correct Answer is:
B
`" " r_(3)=(3)^(2)*r_(1)=9x`
Now, `" " 3lambda_(3)=(2pir_(3))=18pir`
`:. " " lambda_(3)=6pix`
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