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Q.

If in a photoelectric experiment, the wavelength of incident radiation is reduced from 6000 Ao to 4000 Ao then

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a

Stopping potential will decrease

b

The value of work function will decrease

c

Kinetic energy of emitted electrons will decrease

d

Stopping potential will increase

answer is B.

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Detailed Solution

stopping potential 

Vo=hce1λ−1λo.As  λ  decreases   so  Vo   increases.

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