Dual Nature of Matter and Radiation Questions: MCQs on Dual Nature of Matter and Radiation for JEE Main and NEET, Test Number 01
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1. Question4 points
When a metallic surface is illuminated with radiation of wavelength λ, the stopping potential is V. If the same surface is illuminated with radiation of wavelength 2 λ, the stopping potential is 4/V. The threshold wavelength for the metallic surface is [NEET 2016]Correct
2. Question4 points
Photons with energy 5 eV are incident on a cathode C in a photoelectric cell. The maximum energy of emitted photoelectrons is 2 eV. When photons of energy 6 eV are incident on C, no photoelectrons will reach the anode A, if the stopping potential of A relative to C is [NEET 2016]Correct
3. Question4 points
The de Broglie wavelength of an electron accelerated to a potential of 400 V is approximately [Karnataka CET 2016]Correct
4. Question4 points
A photon of energy 10.2 eV collides inelastically with a Hydrogen atom in ground state. After a certain time interval of few micro seconds another photon of energy 15.0 eV collides inelastically with the same hydrogen atom, then the observation made by a suitable detector is [IIT JEE, 2005 Screening]Correct
5. Question4 points
According to Einstein’s photoelectric equation, the plot of the kinetic energy of the emitted photoelectrons from a metal Vs the frequency, of the incident radiation gives a straight line whose slope: [AIEEE 2004]Correct