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MHT CET 2026 (16 Apr, Shift 1) · Photoelectric Effect: Einstein's Equation

Photoelectric Effect: Einstein's Equation question from MHT CET 2026 (16 Apr, Shift 1)

Q4MHT CET 2026 · 16 APR · SHIFT 1Easy

Photoelectric Effect: Einstein's Equation

For a photosensitive material, work function is ' $W_0$ ' and stopping potential is 'V'. The wavelength of the incident radiation is (h=Planck's constant, c = velocity of light, e = electronic charge)

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Answer: (b)

Einstein's equation: $\frac{hc}{\lambda} = W_0 + K_{max} = W_0 + eV$
$\lambda = \frac{hc}{W_0 + eV}$
So the answer is (b) $\frac{hc}{(W_0 + eV)}$ .

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