Dual Nature Of Radiation And Matter Mock Tests

An electron and a photon have the same de Broglie wavelength. The ratio of the kinetic energy of the electron to the energy of the photon is:

The energy of a photon of wavelength 400 nm is approximately: (h = 6.63 × 10⁻³⁴ J·s, c = 3 × 10⁸ m/s)

The work function of a metal is 2.3 eV. The threshold wavelength for photoelectric emission is approximately:

Monochromatic light of wavelength 500 nm is incident on a metal surface with work function 2.0 eV. The stopping potential is approximately:

The de Broglie wavelength of an electron accelerated through a potential difference of 100 V is approximately:

Light of wavelength 400 nm is incident on a metal surface with work function 1.9 eV. The maximum kinetic energy of the emitted photoelectrons is:

Monochromatic light of wavelength 500 nm is incident on a metal surface with work function 2.0 eV. The maximum kinetic energy of the emitted photoelectrons is: (h = 6.626 × 10⁻³⁴ J·s, c = 3 × 10⁸ m/s, 1 eV = 1.6 × 10⁻¹⁹ J)

A photon of wavelength 600 nm has energy approximately equal to: (h = 6.63 × 10⁻³⁴ J·s, c = 3 × 10⁸ m/s)