Physics Topic in Hindi

Physics Topic in Hindi. We covered all the Physics Topic in Hindi MCQs in this post for free so that you can practice well for the exam.

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Physics Topic in Hindi Objective for Students

Emission of electrons in photoelectric effect is possible if:

a. Metal surface is highly polished

b. The incident light is of sufficiently high-intensity

c. The light is incident at right angles to the surface of two metals

d. The incident light is of sufficient low wavelength

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Photoelectrons are emitted from a metal surface when photons of energy 3.1eV or more impinge on it. In an experiment with this metal using monochromatic radiation, the stopping potential was found to be 2.5V. The energy of the photons used in the experiment is:

a. 4.6 eV

b. 3.6 eV

c. 5.6 eV

d. 6.6 eV

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The photoelectric current:

a. Depends on frequency

b. Independent of intensity

c. Independent of frequency and depends on intensity

d. Depends on both

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In the photoelectric effect, the slope of the straight line graph between stopping potential and frequency of incident radiation gives the ratio of Planck's constant to:

a. Electron charge

b. Mass of electron

c. Boltzmann constant

d. Voltage

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Also, check out:

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