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Two statements are given below : Statement I : Photo sensitivity of a metal is high, if its work function is low. Statement II : Work function for a metal is given by ( hv ₀ ), where ( v _ o ) is threshold frequency. Considering the above, choose the appropriate answer from the options given below :

Options

  1. ABoth statement I and statement II are correct.
  2. BStatement I is correct and statement II is incorrect.
  3. CStatement I is incorrect and statement II is correct.
  4. DBoth statements I and statements II are incorrect.

Correct answer

A. Both statement I and statement II are correct.

Step-by-step solution

- Statement I: The photo sensitivity of a metal refers to how easily it emits photo electrons when exposed to light. If the work function of a metal is low, less energy is required to eject electrons. Therefore, metals with a low work function are more photosensitive. Hence, Statement I is correct. - Statement II: The work function ( ( )) of a metal is related to the threshold frequency ( (v₀ )) by the equation ( =h v₀ ), where (h ) is Planck's constant. The threshold frequency is the minimum frequency required to

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