Q.

In a photoelectric effect experiment, the graph of stopping potential V versus reciprocal of wavelength obtained is shown in the figure. As the intensity of incident radiation is increased:

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a

Straight line shifts to left

b

Straight line shifts to right

c

Graph does not change

d

Slope of the straight line get more steep

answer is A.

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Detailed Solution

hcλ=φ+eV   V=hce1λφe

Slope hce  and intercept φe , both are independent of intensity of incident radiation.

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