In an experiment of photo electric emission for incident light of 4000 $A^{0}$ , the stopping potential is 2V. If the wavelength of incident light is made 3000 $A^{0}$ , then the stopping potential will be

Less than 2 volt

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More than 2 volt

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2 volt

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Zero

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Solution

The correct option is C More than 2 volt
$\frac{h c}{λ} = \frac{h c}{λ_{0}} + e V$
Stopping potential varies linearly with frequency but $v α \frac{1}{λ}$
Therefore stopping potential decreases with increases in $λ$ and converse.

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In an experiment of photo electric emission for incident light of 4000 A0, the stopping potential is 2V. If the wavelength of incident light is made 3000 A0 , then the stopping potential will be

The correct option is C More than 2 volthcλ=hcλ0+eVStopping potential varies linearly with frequency but vα1λTherefore stopping potential decreases with increases in λ and converse.

In an experiment of photo electric emission for incident light of 4000 $A^{0}$ , the stopping potential is 2V. If the wavelength of incident light is made 3000 $A^{0}$ , then the stopping potential will be

The correct option is C More than 2 volt
$\frac{h c}{λ} = \frac{h c}{λ_{0}} + e V$
Stopping potential varies linearly with frequency but $v α \frac{1}{λ}$
Therefore stopping potential decreases with increases in $λ$ and converse.