AIPMT-MAINS Physics Dual Nature of Matter & Radiation Class 12 Questions

If the momentum of electron is changed by P, then the de Broglie wavelength associated with it changes by 0.5%. The initial momentum of electron will be:

Two radiations of photons energies 1 eV and 2.5 eV, successively illuminate a photosensitive metallic surface of work function 0.5 eV. The ratio of the maximum speeds of the emitted electrons is:

The threshold frequency for a photosensitive metal is 3.3 × 10¹⁴ Hz. If light of frequency 8.2 × 10¹⁴ Hz is incident on this metal, the cut-off voltage for the photoelectric emission is nearly

An electron in the hydrogen atom jumps from excited state n to the ground state. The wavelength so emitted illuminates a photosensitive material having work function 2.75 eV. If the stopping potential of the photoelectron is 10 V, then the value of n is

When monochromatic radiation of intensity \( I \) falls on a metal surface, the number of photoelectron and their maximum kinetic energy are \( N \) and \( T \) respectively. If the intensity of radiation is \( 2I \), the number of emitted electrons and their maximum kinetic energy are respectively

The number of photoelectrons emitted for light of a frequency ν (higher than the threshold frequency ν₀) is proportional to:

The Figure shows a plot of photo current versus anode potential for a photo sensitive surface for three different radiations. Which one of the following is a correct statement?