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MHT-CET PCB 09 — MHT - CET STD 12 Science — Question

Maharashtra BoardEnglish MediumSTD 12 ScienceMHT - CETMHT-CET PCB 091 Mark
MCQ
When a photosensitive surface is irradiated by lights of wavelengths $`lambda_1`$ and $`lambda_2`$, kinetic energies of emitted photoelectrons are $E_1$ and $E_2$ respectively. The work function of the photosensitive surface is ____________.
  • A
    $`(lambda_1 "E"_1 + lambda_2 "E"_2)/(lambda_2 - lambda_1)`$
  • ✓
    $`(lambda_1 "E"_1 + lambda_2 "E"_2)/(lambda_2 - lambda_1)`$
  • C
    $`(lambda_2 "E"_1 + lambda_2 "E"_2)/(lambda_2 - lambda_1)`$
  • D
    $`(lambda_2 "E"_2 + lambda_1 "E"_1)/(lambda_2 - lambda_1)`$
✓

Answer

Correct option: B.
$`(lambda_1 "E"_1 + lambda_2 "E"_2)/(lambda_2 - lambda_1)`$
B

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