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Photoelectric effect Would an increase in frequency have (no effect/decrease/increase)...

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rockstar195699 | Student, Undergraduate | eNoter

Posted May 21, 2013 at 5:56 PM via web

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Photoelectric effect

Would an increase in frequency have (no effect/decrease/increase) on the speed  of the fastest electrons

Would an increase in intensity have (no effect/decrease/increase) on the speed of the fastest electrons

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llltkl | College Teacher | Valedictorian

Posted May 21, 2013 at 6:15 PM (Answer #1)

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In photoelectric effect when electromagnetic waves of short wavelengths are made incident on some metals, electrons are emitted from the metal surface. The kinetic energy of the photoelectron depends upon the nature of the metal. The maximum velocity of the emitted photoelectrons is proportional to the frequency of the incident light and independent of its intensity. Hence answers to the queries follow:

Would an increase in frequency have (no effect/decrease/increase) on the speed of the fastest electrons: INCREASE

Would an increase in intensity have (no effect/decrease/increase) on the speed of the fastest electrons: NO EFFECT.

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