Dual Nature of Radiation and Matter

Related Questions

• If the work function of a photometal is 6.825 eV. Its threshold wavelength will be $(c = 3 \times {10^8}\,m/s)$

  ---

• The wavelength of most energetic X-rays emitted when a metal target is bombarded by 40KeV electrons, is approximately ($h = 6.62 \times {10^{ - 34}}$ J-sec; 1 eV = $1.6 \times {10^{ - 19}}$J; c = $3 \times {10^8}\,m/s)$

  ---

• X-rays are not used for radar purpose because

  ---

• The rest mass of the photon is

  ---

• In the Millikan's experiment, the distance between two horizontal plates is 2.5 cm and the potential difference applied is 250 V. The electric field between the plates will be

  ---