Sign in
12thPass logo
New chatPYQ LibraryDoubtsRank report
Sign in to see Recents

Your guest activity stays on this device

Sign in to save progress →
Sign in

Dual Nature of Radiation and Matter question

2005 · Q139
Guest · filters and generic practice availableBrowsing as a guest · PYQ filters and generic practice are available. Sign in only for personalised features and saved progress.
  1. PYQ Library
  2. /NEET
  3. /Physics
  4. /Dual Nature of Radiation and Matter
  5. /2005 · Q139

Dual Nature of Radiation and Matter question

2005 · Q139

NEETPhysicsDual Nature of Radiation and MatterMCQ+4 / −1
The work functions for metals A, B and C are respectively 1.92 eV, 2.0 eV and 5 eV. According to Einstein's equation the metals which will emit photoelectrons for a radiation of wavelength 4100 A∘\mathop A\limits^ \circA∘​ is/are
  1. A
    A only
  2. B
    A and B only
  3. C
    all the three metals
  4. D
    none
View written solutionFree

Correct answer: B

Energy of photon = 124004100{{12400} \over {4100}}410012400​ = 3 eV

∴\therefore∴ A and B will emit photoelectrons.

PreviousNext

More from Dual Nature of Radiation and Matter

  • A photosensitive metallic surface has work function, hυ0. If photons of energy 2hυ0​ fall on this surface, the electrons come out with a maximum velocity of 4 × 106 m/s. When the photon energy is increased to…2005 · MCQ
  • According to Einstein's photoelectric equation, the graph between the kinetic energy of photoelectrons ejected and the frequency of incident radiation is2004 · MCQ
  • A photoelectric cell is illuminated by a point source of light 1 m away. When the source is shifted to 2 m then2003 · MCQ
  • J.J. Thomson's cathode-ray tube experiment demonstrated that2003 · MCQ
  • The value of Planck's constant is2002 · MCQ
  • If particles are moving with same velocity, then which has maximum de Broglie wavelength?2002 · MCQ
  • When ultraviolet rays incident on metal plate then photoelectric effect does not occur, it occurs by incidence of2002 · MCQ
  • Which of the following is not the property of cathode rays ?2002 · MCQ