Question Details

If the work function of a metal is 6.63 eV, then find its threshold frequency for photoelectric effect.

Options

A

1.9 × 1015 Hz

B

1.6 × 1015 Hz

C

2 × 1016 Hz

D

1.2 × 1015 Hz

Correct Answer :

1.6 × 1015 Hz

Solution :

ϕ 0 = h v 0

6.63 × 1.6 × 10 19 = 6.63 × 10 34

v 0 v 0 = 1.6 × 10 19 10 34

v 0 = 1.6 × 10 15 H z

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