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The work function of potassium is 2.0 eV...

The work function of potassium is 2.0 eV. When it is illuminated by light of wavelength `3300A^(@)` photo electrons are emitted. The stopping potential of photo electrons is [Plank’s constant `h=6.6xx10^(-34)Js,1eV=1.6xx10^(-19)J,C=3xx10^(8)ms^(-1)`]

A

0.75V

B

1.75 V

C

2.5 V

D

3.75 V

Text Solution

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The correct Answer is:
B
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AAKASH SERIES-DUAL NATURE OF RADIATION AND MATTER-EXERCISE=II
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