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Standard XII

Physics

Stopping Potential

In a photoele...

Question

In a photoelectric experiment, electrons are ejected from metals X and Y by light of intensity I and frequency f. The potential difference V required to stop the electrons is measured for various frequencies. If Y has a greater work function than X; which one of the following graphs best illustrates the expected results?

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Solution

The correct option is A

Greater work function means more negative potential is required to stop the ejection of electrons. Moreover, the slope of both the graphs will be the same.

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Similar questions

Q. In a photoelectric emission, electrons are ejected from metals

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Q

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Q. Assertion :As work function of a material increase by some mechanism, it requires greater energy to excite the electrons from its surface. Reason: A plot of stopping potential

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The correct option is A Greater work function means more negative potential is required to stop the ejection of electrons. Moreover, the slope of both the graphs will be the same.

The correct option is A

Greater work function means more negative potential is required to stop the ejection of electrons. Moreover, the slope of both the graphs will be the same.