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MHT CET20239 May 2023Evening ShiftPhysicsDual Nature of MatterActual

When a certain metal surface is illuminated with light of frequency v , the stopping potential for photoelectric current is V ₀ . When the same surface is illuminated by light of frequency v 2 , the stopping potential is V ₀ 4 , the threshold frequency of photoelectric emission is

Options

  1. Av 6
  2. Bv 3
  3. C2 v 3
  4. D4 v 3

Correct answer

B. v 3

Step-by-step solution

aligned & eV ₀=h v-h v₀ ... (i) & eV ₀ 4 = h v 2 -h v₀ ... (ii) aligned Dividing equation (i) by equation (ii), array ll & 4= v-v₀ v 2 -v₀ & 2 v-4 v₀=v-v₀ & 3 v₀=v & v₀= v 3 array

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