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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

protons will be emitted

D

electrons will not be emitted

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The correct Answer is:
A
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MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS-PRACTICE SET 23-Paper-1(PHYSICS & CHEMISTRY)
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