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AP EAMCET202315 May 2023Evening ShiftPhysicsDual Nature of MatterActual

The de Broglie wavelength of the most energetic photoelectrons emitted from a photosensitive metal of work function , when light frequency v incidents on it is . Then v = ( h - Planck's constant, m - mass of electron)

Options

  1. A2 h - h m ^2
  2. B2 h + h m ^2
  3. Ch + h 2 m ^2
  4. Dh - h 2 ~m ^2

Correct answer

C. h + h 2 m ^2

Step-by-step solution

By photoelectric effect aligned & hv = + K E & h v= + 1 2 mv ^2 & v= h + mv ^2 2 ~h & v= h + m 2 ~h h ^2 ~m ^2 ^2 & = h mv ; v = h m & V = h + h 2 ~m ^2 aligned

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