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The circumference of the second orbit of...

The circumference of the second orbit of an atom or ion having single electron,`4times10^(-9)`m.The de-Broglie wavelength of electron revolving in this orbit should be

A

`2times10^(-9)m`

B

`4times10^(-9)m`

C

`8times10^(-9)m`

D

`1times10^(-9)m`

Text Solution

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The correct Answer is:
A
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