The ionization energy of Li⁺⁺ is equal to
The ionization energy of Li⁺⁺ is equal to Options (a) 9hcR (b) 6hcR (c) 2hcR (d) hcR Correct Answer: 9hcR…
7 years ago
Dual Nature of Matter and Radiation
The threshold frequency for a metallic surface corresponds to an energy of 6.2 eV,
The threshold frequency for a metallic surface corresponds to an energy of 6.2 eV, and the stopping potential for a…
7 years ago
If alpha, beta and gamma rays carry same momentum, which has the longest
If alpha, beta and gamma rays carry same momentum, which has the longest wavelength Options (a) Alpha rays (b) Beta…
7 years ago
Photoelectric current from a given photocell will depend upon
Photoelectric current from a given photocell will depend upon Options (a) Number of photons striking per second (b) Frequency of…
7 years ago
Which one of the following statements is WRONG in the context of X-rays generated
Which one of the following statements is WRONG in the context of X-rays generated from a X-ray tube? Options (a)…
7 years ago
A photocell employs photoelectric effect to convert
A photocell employs photoelectric effect to convert Options (a) Change in the frequency of light into a change in the…
7 years ago
Characteristic X-rays are produced due to
Characteristic X-rays are produced due to Options (a) Transfer of momentum in collision of electrons with target atoms (b) Transition…
7 years ago
Light is emitted when
Light is emitted when Options (a) Electron make an transition from higher orbit to lower orbit (b) Electron make an…
7 years ago
When photons of energy hν fall on an aluminium plate (of work function E₀),
When photons of energy hν fall on an aluminium plate (of work function E₀), photoelectrons of maximum kinetic energy K…
7 years ago
Cathode rays are produced when the pressure is of the order of
Cathode rays are produced when the pressure is of the order of Options (a) 2 cm of Hg (b) 0.1…
7 years ago