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If velocity of an electron in 1^(st) Boh...

If velocity of an electron in `1^(st)` Bohr orbit of hydrogen atom us `x`, its velocity in `3^(rd)` orbit will be.

A

`(x)/(3)`

B

`3 x`

C

`9 x`

D

`(x)/(9)`

Text Solution

Verified by Experts

The correct Answer is:
A
(a) `V_n = (2 pi Ze^2 K)/(nh)`
`:. (V_3)/(V_1) = (1)/(3)`
`:. V_3 = (V_1)/(3)` or `(x)/(3)`.
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