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Light of wavelength 4000A^(@) is inciden...

Light of wavelength `4000A^(@)` is incident on a potassium surface whose work function is 2.1eV. What will be the stopping potential

A

1 V

B

2.1 V

C

4000 V

D

3.1 V

Text Solution

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The correct Answer is:
A
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AAKASH SERIES-DUAL NATURE OF RADIATION AND MATTER-PRACTICE EXERCISEX
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