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प्रश्न
Plot a graph to show the variation of stopping potential with frequency of incident radiation in relation to photoelectric effect.
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उत्तर १
Due to increase in frequency there is increase in K.E. of electron.
So stopping potential increases with increase in frequency of incides ralation.
उत्तर २
उत्तर ३
संबंधित प्रश्न
Is the formula you employ in (a) valid for calculating radius of the path of a 20 MeV electron beam? If not, in what way is it modified?
An electron gun with its collector at a potential of 100 V fires out electrons in a spherical bulb containing hydrogen gas at low pressure (∼10−2 mm of Hg). A magnetic field of 2.83 × 10−4 T curves the path of the electrons in a circular orbit of radius 12.0 cm. (The path can be viewed because the gas ions in the path focus the beam by attracting electrons, and emitting light by electron capture; this method is known as the ‘fine beam tube’ method. Determine e/m from the data.
Visible light has wavelengths in the range of 400 nm to 780 nm. Calculate the range of energy of the photons of visible light.
(Use h = 6.63 × 10-34J-s = 4.14 × 10-15 eV-s, c = 3 × 108 m/s and me = 9.1 × 10-31kg)
In the experimental set up for studying photoelectric effect, if keeping the frequency of the incident radiation and the accelerating potential fixed, the intensity of light is varied, then ______.
The electromagnetic theory of light failed to explain ______.
An increase in the intensity of the radiation causing photo-electric emission from a surface does not affect the maximum K.E. of the photoelectrons. Explain.
According to the wave picture, what is light?
According to wave theory, how should greater radiation intensity affect the energy absorbed by each electron?
What energy must an electron gain to escape from the metal?
What is observed about the timing of photoelectric emission?
