If the minimum energy of photons needed to produce photoelectrons is 3 eV,
If the minimum energy of photons needed to produce photoelectrons is 3 eV, bombardinbg the photoelectric material by a number…
7 years ago
Dual Nature of Matter and Radiation
A particle of mass 1 mg has the same wavelength as an electron moving with a velocity
A particle of mass 1 mg has the same wavelength as an electron moving with a velocity of 3 x…
7 years ago
Calcium plate has a maximum possible radiation wavelength 400 nm to eject electrons.
Calcium plate has a maximum possible radiation wavelength 400 nm to eject electrons. Its work function is Options (a) 23…
7 years ago
A light of wavelength 5000Å falls on a sensitive plate with photoelectric work
A light of wavelength 5000Å falls on a sensitive plate with photoelectric work function 1.90 eV. Kinetic energy of the…
7 years ago
Bragg’s law for X-rays is
Bragg's law for X-rays is Options (a) d sin θ = 2nλ (b) 2d sin θ = nλ (c) n…
7 years ago
Electrons with energy 80 keV are incident on the tungsten target of an X-ray tube.
Electrons with energy 80 keV are incident on the tungsten target of an X-ray tube. The K-shell electrons of tungsten…
7 years ago
A charged oil drop is suspended in a uniform field at 3×10⁴ V/m so that it neither falls
A charged oil drop is suspended in a uniform field at 3x10⁴ V/m so that it neither falls nor rises.…
7 years ago
An α-particle moves in a circular path of radius 0.83 cm in the presence of a magnetic
An α-particle moves in a circular path of radius 0.83 cm in the presence of a magnetic field of 0.25…
7 years ago
Electrons in a certain energy level n=n₁, can emit 3 spectral lines. When they
Electrons in a certain energy level n=n₁, can emit 3 spectral lines. When they are in another energy level, n=n₂.…
7 years ago
In a laser tube, all the photons
In a laser tube, all the photons Options (a) have same energy (b) have same wavelength (c) move in same…
7 years ago