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The Planck'S Constant - Physics

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MCQ

When radiations of wavelength λ1 and λ2 are incident on certain photosensitive, such that E1 > E2 . Then Planck's constant 'h' is ......................... .

(C = Velocity of light).

Options

  • `((E_1 - E_2)(lambda_1 - lambda_2))/(C(lambda_1 * lambda_2))`

  • `((E_1 - E_2)lambda_1C)/((lambda_1 - lambda_2)lambda_2)`

  • `((E_1 - E_2)lambda_1lambda_2)/(C(lambda_2 - lambda_1))`

  • `((lambda_1 - lambda_2)C)/((E_1 - E_2)lambda_1 * lambda_2)`

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Solution

`((E_1 - E_2)lambda_1lambda_2)/(C(lambda_2 - lambda_1))`

Concept: Einstein’s Equation - Particle Nature of Light
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