The graph between the stopping potential \( V_{0} \) and frequency \(

1.	The graph between the stopping potential \( V_{0} \) and frequency \( v \) for two different metal plates \( P \) and \( Q \) are shown in the figure. Which of the metals has greater threshold wavelength and work function ?
Answer» The threshold frequency of metal plate P is lesser than that of Q. Since λ∝ 1/ν, the threshold wavelength of metal plate P is greater than that of Q. The work function of a metal is given as W₀ =hν₀ Since the threshold frequency of metal Q is greater, the work function it is also greater than that of P.

The graph between the stopping potential \( V_{0} \) and frequency \( v \) for two different metal plates \( P \) and \( Q \) are shown in the figure. Which of the metals has greater threshold wavelength and work function ?

Answer»

The threshold frequency of metal plate P is lesser than that of Q.

Since λ∝ 1/ν, the threshold wavelength of metal plate P is greater than that of Q.

The work function of a metal is given as
W₀ =hν₀

Since the threshold frequency of metal Q is greater, the work function it is also greater than that of P.

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The graph between the stopping potential \( V_{0} \) and frequency \( v \) for two different metal plates \( P \) and \( Q \) are shown in the figure. Which of the metals has greater threshold wavelength and work function ?

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