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If the work function of a photo - metal ...

If the work function of a photo - metal is `6.825 eV`. Its threshold wavelength will be `( c = 3 xx 10^(8) m//s)`

A

1200 Å

B

1800 Å

C

2400 Å

D

3600 Å

Text Solution

Verified by Experts

The correct Answer is:
B
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