19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
The energy required to break one mole of Cl–Cl bonds in Cl₂ is 242 kJ mol⁻¹. The largest wavelength of light capable of breaking a single Cl–Cl bond is
Einstein's theory of photoelectric effect is based on:
In the photoelectric effect, the number of photoelectrons emitted is proportional to:
Increasing the frequency of incident radiation in the photoelectric effect increases the:
The photoelectric effect shows:
The kinetic energy of photoelectrons does NOT depend upon
The minimum frequency ν₀, below which the photoelectric effect is not observed, is called
Ultraviolet light of 6.2 eV falls on an aluminium surface (work function = 4.2 eV). The kinetic energy (in joule) of the fastest electron emitted is approximately:
The threshold wavelength for the photoelectric effect on sodium is 5000 Å. Its work function is:
If the threshold frequency of a metal for the photoelectric effect is ν₀, which of the following will NOT happen?
The energy of an electron in the 3rd orbit of hydrogen atom is
The ionization energy of H atom is 13.6 eV. The ionization energy of Li²⁺ ion will be