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…
8 years ago
Questions
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:…
8 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…
8 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)…
8 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…
8 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…
8 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…
8 years ago
For photoelectric emission from certain metal the cut-off frequency is v
For photoelectric emission from certain metal the cut-off frequency is v. If radiation of frequency 2v impinges on the metal…
8 years ago
Two radiations of photons energies 1 eV and 2.5 eV, successively
Two radiations of photons energies 1 eV and 2.5 eV, successively illuminate a photosensitive metallic surface of work function 0.5…
8 years ago
Maximum velocity of the photoelectrons emitted by a metal surface is 1.2×10⁶ ms⁻¹.
Maximum velocity of the photoelectrons emitted by a metal surface is 1.2x10⁶ ms⁻¹. Assuming the specific charge of the electron…
8 years ago