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What Change Will You Observe If Intensity of Incident Radiation is Changed but the Frequency Remains the Same? - Physics

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प्रश्न

What change will you observe if intensity of incident radiation is changed but the frequency remains the same?

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उत्तर

 If intensity of incident radiation is changed but the frequency remains the same, the plot will be

If the intensity of incident radiation is changed but the frequency remains the same in this case the stopping potential remains unchanged.

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2016-2017 (March) Foreign Set 3

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संबंधित प्रश्‍न

The photoelectric work function for a metal surface is 2.3 eV. If the light of wavelength 6800A is incident on the surface of metal, find threshold frequency and incident frequency. Will there be an emission of photoelectrons or not?

[Velocity of light c = 3 x 108 m/s,

Planck’s constant, h = 6.63 * 10-34 Js ]


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Light of wavelength 4000 Å is incident on two metals A and B. Which metal will emit photoelectrons, if their work functions are 3.8 e V and 1.6 e V respectively?


Consider an electron in front of metallic surface at a distance d (treated as an infinite plane surface). Assume the force of attraction by the plate is given as `1/4 q^2/(4πε_0d^2)`. Calculate work in taking the charge to an infinite distance from the plate. Taking d = 0.1 nm, find the work done in electron volts. [Such a force law is not valid for d < 0.1nm].


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