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Dual Nature of Radiation and Matter Test - 24
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Dual Nature of Radiation and Matter Test - 24

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  • Question 1/10
    4 / -1
    If velocity of free election is made double, change in its de-Broglie wavelength will be......
    Solutions

  • Question 2/10
    4 / -1
    de-Broglie wavelength of proton accelerated under 100 V electric potential difference is λ0 . If de - wave length α - particle accelerated by the same electric potential difference will its bouglie ............
    Solutions

  • Question 3/10
    4 / -1
    Work function of a body is 4.0 eV. For emission of photo electron from body, maximum wavelength of light = ..........
    Solutions

  • Question 4/10
    4 / -1
    A body of mass 200 g moves at the speed of 5 m/hr. So de-Broglie wavelength related to it is of the order........ (h = 6.626 × 10–34 J - s)
    Solutions

  • Question 5/10
    4 / -1
    Photo electric effect on surface is found for frequencies 5.5 × 108 MHz and 4.5 × 108 MHz If ratio of maximum kinetic energies of emitted photo electrons is 1 : 5, threshold frequency for metal surface is................
    Solutions

  • Question 6/10
    4 / -1
    For wave concerned with proton, de - Broglie wavelength change by 0.25% . If its momentum changes by PO initial momentum = ........
    Solutions

  • Question 7/10
    4 / -1
    According to Einstein\'s photoelectric equation, graph of kinetic energy of emitted photo electrons from metal versus frequency of incident radiation is linear. Its shope.............
  • Question 8/10
    4 / -1
    Energy corresponding to threshold frequency of metal is 6.2 eV. If stopping potential corresponding to radiation incident on surface is 5V, incident radiation will be in the.....region.
  • Question 9/10
    4 / -1
    At 10oC temperature, de-Broglie wave length of atom is 0.4Å . If temperature of atom is increased by 30oC , what will be change in de-Broglie wavelength of atom ?
    Solutions

  • Question 10/10
    4 / -1
    Wavelength of incident radiation on photo sensitive surface is changed from 4000 Å to 3000 Å , so change in stopping potential will be.......
    Solutions

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