Questions in Dual Nature of Radiation and Matter

Select	Question
	The work function of a metal is
	The minimum wavelength of photon is 5000 Å, its energy will be
	Which of one is correct
	The work function for metals A, B and C are respectively 1.92 eV, 2.0 eV and 5 eV. According to Einstein’s equation, the metals which will emit photo electrons for a radiation of wavelength 4100 Å is/are
	A photosensitive metallic surface has work function $h{v_0}$. If photons of energy fall on this surface the electrons come out with a maximum velocity of $4 \times {10^6}\,m/s$. When the photon energy is increases to $5h{v_0}$ then maximum velocity of photo electron will be
	A photocell is illuminated by a small bright source placed 1 m away. When the same source of light is placed $\frac{1}{2}m$ away, the number of electrons emitted by photo cathode would
	The magnitude of saturation photoelectric current depends upon
	For photoelectric emission, tungsten requires light of 2300 Å. If light of 1800 Å wavelength is incident then emission
	The light rays having photons of energy 1.8 eV are falling on a metal surface having a work function 1.2 eV. What is the stopping potential to be applied to stop the emitting electrons
	The incident photon involved in the photoelectric effect experiment.