If threshold wavelength for sodium is 6800 A then the work functi… - Vidyadip

MCQ

If threshold wavelength for sodium is $6800 \mathring A$ then the work function will be

✓
$1.8 \mathrm{eV}$
B
$2.5 \mathrm{eV}$
C
$2.1 \mathrm{eV}$
D
$1.4 \mathrm{eV}$

✓

Answer

Correct option: A.

$1.8 \mathrm{eV}$

$W_0=\frac{12375}{6800}=1.8 \mathrm{eV}$

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