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The treshold wavelength for photoelect...

The treshold wavelength for photoelectirc emission from a material is `4800 Å` Photoelectrons will be emitted from the material , when it is illuminated with light from a

A

40 W blue lamp

B

40 W green lamp

C

100 W red lamp

D

100 W yellow lamp

Text Solution

Verified by Experts

The correct Answer is:
A
Threshold wavelength `(lamda_0) = 4800 Å`
It belongs to blue colour.
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