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The work functions for metals A, B and ...

The work functions for metals ` A, B` and ( C) are presepctively ` 1. 92 eV` , `2, 0` eV 1 and ` 5.0 eV` According to Einstein equation , the metal which will emit photoelectron for a radistion fo wavelingth ` 4100 Å`/are

A

A only

B

(A) and (B) only

C

A, B and ( C)

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
B
`E= (12375)/(lambda_(("in "Å))) = (12375)/(4100) = 3.018 eV`
Thus only (A) and (B) will eject photo electrons .
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