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

2008 · Q140
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. /2008 · Q140

Dual Nature of Radiation and Matter question

2008 · Q140

NEETPhysicsDual Nature of Radiation and MatterMCQ+4 / −1
In the phenomenon of electric discharge through gases at low pressure, the coloured glow in the tube appears as a result of
  1. A
    collisions between the charged particles emitted from the cathode and the atoms of the gas
  2. B
    collision between different electrons of the atoms of the gas
  3. C
    excitation of electrons in the atoms
  4. D
    collision between the atoms of the gas
View written solutionFree

Correct answer: A

In the phenomenon of electric discharge tube through gases at low pressure, the coloured glow in the tube appears as a result of collisions between the charged particles emitted from cathode and the atoms of the gas.

PreviousNext

More from Dual Nature of Radiation and Matter

  • Monochromatic light of frequency 6.0 × 1014 Hz is produced by a laser. The power emitted is 2 × 10−3 W. The number of photons emitted, on the average, by the source per second is2007 · MCQ
  • A beam of electron passes undeflected through mutually perpendicular electric and magnetic fields. If the electric field is switched off, and the same magnetic field is maintained, the electrons move2007 · MCQ
  • A 5 watt source emits monochromatic light of wavelength 5000 A∘​. When placed 0.5 m away, it liberates photoelectrons from a photosensitive metallic surface. When the source is moved to a distance of 1.0 m, the…2007 · MCQ
  • A photocell employs photoelectric effect to convert2006 · MCQ
  • When photons of energy hυ fall on an aluminimum plate (of work function E0), photoelectrons of maximum kinetic energy K are ejected. If the frequency of radiation is doubled, the maximum kinetic energy of the ejected…2006 · MCQ
  • In a discharge tube ionization of enclosed gas is produced due to collisions between2006 · MCQ
  • The momentum of a photon of energy 1 MeV in kg m/s will be2006 · MCQ
  • 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∘​ is/are2005 · MCQ