The graph between 1- and stopping potential V of three metals having work function -1- -2 and -3 in an experiment of photo-electric effect is plotted as shown in the figure- Which of the following statements is-are correct-

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Byju's Answer

Standard XII

Chemistry

De Broglie's Hypothesis

The graph bet...

Question

The graph between $\frac{1}{λ}$ and stopping potential (V) of three metals having work function $ϕ_{1}, ϕ_{2}$ and $ϕ_{3}$ in an experiment of photo-electric effect is plotted as shown in the figure. Which of the following statements is/are correct.

Ratio of work function

ϕ_{1} : ϕ_{2} : ϕ_{3} = 4 : 2 : 1

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t a n θ

is inversely proportional to e, charge of electron

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Ratio of threshold wave length

λ_{1} : λ_{2} : λ_{3} = 4 : 2 : 1

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The slope is independent of the nature of material.

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Solution

The correct options are
B $t a n θ$ is inversely proportional to e, charge of electron

C Ratio of threshold wave length $λ_{1} : λ_{2} : λ_{3} = 4 : 2 : 1$
D The slope is independent of the nature of material.
From graph $ϕ_{1} : ϕ_{2} : ϕ_{3} = 1 : 2 : 4$

therefore $λ_{1} : λ_{2} : λ_{3} = 4 : 2 : 1$

slope = $\frac{h c}{e}$ = constant, does not depend on the metal.

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The graph between the stopping potential ( $V_{0}$ ) and $(\frac{1}{λ})$ is shown in the figure. $ϕ_{1}$ , $ϕ_{2}$ and $ϕ_{3}$ are work functions, which of the following is/are correct.

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The graph between 1λ and stopping potential (V) of three metals having work function ϕ1,ϕ2 and ϕ3 in an experiment of photo-electric effect is plotted as shown in the figure. Which of the following statements is/are correct.

The correct options are B tan θ is inversely proportional to e, charge of electron C Ratio of threshold wave length λ1:λ2:λ3=4:2:1 D The slope is independent of the nature of material. From graph ϕ1:ϕ2:ϕ3=1:2:4 therefore λ1:λ2:λ3=4:2:1 slope = hce = constant, does not depend on the metal.

The graph between $\frac{1}{λ}$ and stopping potential (V) of three metals having work function $ϕ_{1}, ϕ_{2}$ and $ϕ_{3}$ in an experiment of photo-electric effect is plotted as shown in the figure. Which of the following statements is/are correct.