Following graphs show the variation of stopping potential corresponding to the frequency of incident radiation (F) for a given metal. The correct variation is shown in graph ( v 0 = Threshold frequency) :

Home » Following graphs show the variation of stopping potential corresponding to the frequency of incident radiation (F) for a given metal. The correct variation is shown in graph ( v 0 = Threshold frequency) :

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Following graphs show the variation of stopping potential corresponding to the frequency of incident radiation (F) for a given metal. The correct variation is shown in graph ( v 0 = Threshold frequency) :

$(1)$
$(2)$
$(3)$
$(4)$

Solution: The correct answer is A. (1)

The stopping potential is the amount of energy required to prevent an electron from reaching the outside world. Electrons are emitted from the metal surface when the frequency of radiation exceeds these threshold frequencies. The minimum frequency required to remove an electron from a metal surface is known as the threshold frequency. So, at Vo (threshold frequency), electrons are withdrawn, and substantial energy is required to stop these electrons, i.e., the stopping potential grows as frequency increases after Vo because more electrons are expelled from the metal surface.

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More Material

The refractive index of glass is $1.5$ . What is the speed of light in glass? Speed of light in vacuum is $3.0 \times 10^{\mathrm{A}} \mathrm{ms}^{-1}$ .

Consider interference between two sources of intensities I and 4I. What will be the intensity at points where phase differences are:

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