Doubts
Sign in
12thPass logo
New chatPYQ LibraryDoubtsRank report
Sign in to see Recents
Sign in to save progress →
Doubts
Sign in

Dual Nature of Radiation question

2005 · Shift 0 · Q119
Guest · try one question or challengeGuest · try one question or challenge
  1. PYQ Library
  2. /JEE Main
  3. /Physics
  4. /Dual Nature of Radiation
  5. /2005 · Shift 0 · Q119

Dual Nature of Radiation question

2005 · Shift 0 · Q119

JEE MainPhysicsDual Nature of RadiationMCQ+4 / −1
A photocell is illuminated by a small bright source placed 1m1m1m away. When the same source of light is placed 12m{1 \over 2}m21​m away, the number of electrons emitted by photo-cathode would
  1. A
    increases by a factor of 444
  2. B
    decreases by a factor of 444
  3. C
    increases by a factor of 222
  4. D
    decreases by a factor of 222
PreviousNext

More from Dual Nature of Radiation

  • If the kinetic energy of a free electron doubles, it's deBroglie wavelength changes by the factor2005 · MCQ
  • The work function of a substance is 4.0eV. The longest wavelength of light that can cause photo-electron emission from this substance is approximately.2004 · MCQ
  • According to Einstein's photoelectric equation, the plot of the kinetic energy of the emitted photo electrons from a metal Vs the frequency, of the incident radiation gives as straight the whose slope2004 · MCQ
  • Two identical photo-cathodes receive light of frequencies f1​ and f2​. If the velocities of the photo electrons (of mass m) coming out are respectively v1​ and v2​, then2003 · MCQ
  • Sodium and copper have work functions 2.3eV and 4.5eV respectively. Then the ratio of the wavelengths is nearest to2002 · MCQ
  • Formation of covalent bonds in compounds exhibits2002 · MCQ
  • A monochromatic light is incident on a metallic plate having work function ϕ. An electron, emitted normally to the plate from a point A with maximum kinetic energy, enters a constant magnetic field, perpendicular to the initial…2025 · MCQ
  • An electron with mass ' m ' with an initial velocity (t=0)v=v0​i^(v0​>0) enters a magnetic field B=B0​j^​. If the initial…2025 · MCQ