Threshold wavelength for photoelectric effect on sodium is 5000 Å… - Vidyadip

MCQ

Threshold wavelength for photoelectric effect on sodium is 5000 Å. Its work function is

A
15 J
B
$16 \times 10^{-14} \mathrm{~J}$
✓
$4 \times 10^{-19} \mathrm{~J}$
D
$4 \times 10^{-81} \mathrm{~J}$

✓

Answer

Correct option: C.

$4 \times 10^{-19} \mathrm{~J}$

(c) $4 \times 10^{-19} \mathrm{~J}$

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