QCEVault

Quantum theory — Question 39

Original QCE Vault practice · 1 mark

Q39 · Practice questionSimple familiar1 mark

QUESTION 39

What is the energy of a photon of wavelength 500 nm500\,\text{nm}?
(A)
1.33×10−19 J1.33\times10^{-19}\,\text{J}
(B)
2.00×10−19 J2.00\times10^{-19}\,\text{J}
(C)
3.98×10−19 J3.98\times10^{-19}\,\text{J}
(D)
6.63×10−19 J6.63\times10^{-19}\,\text{J}
Question linkSyllabus coverage

Related questions

  1. Q38 · Original practice · 1 mark
    Two idealised blackbody curves are shown. Curve T1T_1 has a shorter peak wavelength than curve T2T_2. Which statement is correct?
    Quantum theory
  2. Q40 · Original practice · 1 mark
    Photons of energy 6.0 eV6.0\,\text{eV} strike a metal with work function 2.2 eV2.2\,\text{eV}. The maximum photoelectron kinetic energy is
    Quantum theory
  3. Q41 · Original practice · 1 mark
    A metal has work function 2.50 eV2.50\,\text{eV}. Its threshold frequency is closest to
    Quantum theory
  4. Q42 · Original practice · 1 mark
    For a graph of maximum photoelectron kinetic energy against incident frequency, the gradient is equal to
    Quantum theory