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The photoelectric threshold of a certain...

The photoelectric threshold of a certain metal is `3000A`. If the radiation of `2000A` is incident on the metal

A

Electrons will be emitted

B

Positrons will be emitted

C

Neutrons will be emitted

D

Protons will be emitted

Text Solution

Verified by Experts

The correct Answer is:
A
For electron emission `lambda_( incident)` `lt` `lambda_(0)`
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