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Photoelectric Effect MCQs for Competitive Exams

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Photoelectric Effect MCQs for Competitive Exams

Practice with answers, explanations, and exam-focused revision notes.

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Topic Notes: Photoelectric Effect

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Quick Overview

Photoelectric Effect MCQs in Physics are useful for candidates who need targeted practice for CSS, PMS, FPSC, PPSC, NTS, entry tests, and other competitive exams in Pakistan. This topic page is designed for quick revision, repeated practice, and exam-focused preparation.

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1
Number of electrons emitted in photoelectric effect depends upon:
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2
In the experiment of photoelectric effect, the minimum frequency of photons at which electrons are emitted from a metal surface is called
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3
Photoelectric effect means the emission of:
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4
In photoelectric effect, the number of electrons ejected per second is
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5
In __________ Einstein proposed a mechanism for the photoelectric effect, based on Planck's idea of quanta of energy.
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6
A point source of light is used in a photoelectric effect. If the source is moved farther from the emitting metal, the stopping potential
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7
161. Photoelectric effect shows
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8
20. The photoelectric effect was satisfactorily explained by
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9
Consider: a. Tightly bound electrons of target material scatter X-ray photon, resulting in the Compton effect; b. Photoelectric effect takes place with free electrons. Identify the correct choice.
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10
In photoelectric effect, the kinetic energy of electrons emitted from the metal surface depends upon
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