JEE (Mains) - 27 Jan 2024 (Shift - 2)

# Q1 of 72

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

Show Answer
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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