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Find the minimum frequency of light whic...

Find the minimum frequency of light which can ionise a hydrogen atom.

A

`1.5xx10^14 Hz`

B

`2.5xx10^15 Hz`

C

`3.3xx10^15 Hz`

D

`5xx10^15Hz`

Text Solution

Verified by Experts

The correct Answer is:
C
For `H_2`, ionisation energy hv = 13.6 eV
`therefore v = (13.6eV)/(h)`
`= (13.6xx1.6xx10^(-19))/(6.63xx10^(-34)) = 3.3xx10^15 Hz`
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