The momentum of a photon of energy 1 MeV in kg m/s will be
The momentum of a photon of energy 1 MeV in kg m/s will be Options (a) 5 x 10⁻²² (b)…
7 years ago
Dual Nature of Matter and Radiation
In a discharge tube ionization of enclosed gas is produced due to collisions between
In a discharge tube ionization of enclosed gas is produced due to collisions between Options (a) Netural gas atoms/molecules (b)…
7 years ago
We get Balmer series when electron comes from
We get Balmer series when electron comes from Options (a) Higher to 2nd orbit (b) 2nd to higher orbit (c)…
7 years ago
Which of the following are mechanical waves?
Which of the following are mechanical waves? Options (a) Light waves (b) Sound waves (c) X-rays (d) Ratio waves Correct…
7 years ago
The wavelength of the matter wave is independent of
The wavelength of the matter wave is independent of Options (a) Mass (b) Velocity (c) Momentum (d) Charge Correct Answer:…
7 years ago
α-particles, deuterons and protons of same energy are moving in a perpendicular
α-particles, deuterons and protons of same energy are moving in a perpendicular magnetic field. The ratio of diameters of their…
7 years ago
When photons of energy hν are incident on the surface of photosensitive
When photons of energy hν are incident on the surface of photosensitive material of work function hν₀, then Options (a)…
7 years ago
The de-Broglie wavelength of neutron in thermal equilibrium at temperature T is
The de-Broglie wavelength of neutron in thermal equilibrium at temperature T is Options (a) 30.8 / √T Å (b) 3.08…
7 years ago
The photoelectric threshold frequency of a metal is ν. When light of frequency 4ν
The photoelectric threshold frequency of a metal is ν. When light of frequency 4ν is incident on the metal, the…
7 years ago
The wavelength λₑ of an electron and λₚ of a photon are of same energy E are related by
The wavelength λₑ of an electron and λₚ of a photon are of same energy E are related by Options…
7 years ago