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A metallic surface ejects electrons when...

A metallic surface ejects electrons when hit by green light but none when hit by yellow light .
Will the electrons be ejected if the same surface is hit by red light

A

yes

B

no

C

yes, if the red beam is sufficiently intense

D

yes , if the red beam is allowed to fall for sufficient duration

Text Solution

Verified by Experts

The correct Answer is:
B
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