Please wait...

Dual Nature of Radiation and Matter Test - 61
Result
Dual Nature of Radiation and Matter Test - 61

  • /

    Score

  • -

    Rank
Time Taken: -
  • Question 1/10
    4 / -1
    Electrons with energy 80 keV are incident on the tungsten target of an X-ray tube. K shell electrons of tungsten have ionization energy 72.5 keV. X-rays emitted by the tube contain only
    Solutions

  • Question 2/10
    4 / -1
    The X-ray wavelength of Lα line of platinum (Z = 78) is 1.30 Å. The X-ray wavelength of Lα line of Molybdenum (Z = 42) is
    Solutions

  • Question 3/10
    4 / -1
    The ratio of de-Broglie wavelengths of molecules of hydrogen and helium which are at temperature 27°C and 127°C respectively is
    Solutions

  • Question 4/10
    4 / -1
    A silver ball of radius 4.8 cm is suspended by a thread in the vacuum chamber. UV light of wavelength 200 nm is incident on the ball for some time during which a total energy of 1 × 10–7 J falls on the surface. Assuming on an average one out of 103 photons incident is able to eject electron, the potential on sphere will be
    Solutions

  • Question 5/10
    4 / -1
    A photon of wavelength 6630 Å is incident on a totally reflecting surface. The momentum delivered by the photon is equal to
    Solutions

  • Question 6/10
    4 / -1
    The ratio of de-Broglie wavelength of a α-particle to that of a proton being subjected to the same magnetic field so that the radii of their path are equal to each other assuming the field induction vector ( B ) ⃗ is perpendicular to the velocity vectors of the α-particle and the proton is
    Solutions

  • Question 7/10
    4 / -1
    Kα wavelength emitted by an atom of atomic number Z = 11 is λ. Find the atomic number of an atom that emits Kα radiation with wavelength 4λ
    Solutions

  • Question 8/10
    4 / -1

    Solutions

  • Question 9/10
    4 / -1
    Rest mass energy of an electron is 0.51 MeV. If this electron is moving with a velocity 0.8 c (where c is velocity of light in vacuum), then kinetic energy of the electron should be
    Solutions

  • Question 10/10
    4 / -1
    A proton, a deutron and an α-particle having the same momentum, enters a region of uniform electric field between the parallel plates of a capacitor. The electric field is perpendicular to the initial path of the particles. Then the ratio of deflections suffered by them is

    Solutions

User Profile
-

Correct (-)

Wrong (-)

Skipped (-)

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
Get latest Exam Updates
& Study Material Alerts!
No, Thanks
Click on Allow to receive notifications
×
Open Now