Photoelectric there should wavelength of photo sensitive material is 3700 A, the work function in eV is $(h = 6.63 \times 10^{- 34} J s)$ :

1.55 eV

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3.35 eV

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4.85 eV

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5.25 eV

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Solution

The correct option is B 3.35 eV
$\frac{h c}{α} = w$ function-

$= \frac{6.64 \times 10^{- 34} \times 3 \times 10^{8}}{3700 \times 10^{- 10} \times 1.6 \times 10^{- 19}}$

$= 3.36 e v$

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Photoelectric there should wavelength of photo sensitive material is 3700 A, the work function in eV is (h=6.63×10−34Js) :

The correct option is B 3.35 eVhcα=w function- =6.64×10−34×3×1083700×10−10×1.6×10−19 =3.36ev

Photoelectric there should wavelength of photo sensitive material is 3700 A, the work function in eV is $(h = 6.63 \times 10^{- 34} J s)$ :

The correct option is B 3.35 eV
$\frac{h c}{α} = w$ function-

$= \frac{6.64 \times 10^{- 34} \times 3 \times 10^{8}}{3700 \times 10^{- 10} \times 1.6 \times 10^{- 19}}$

$= 3.36 e v$