Dual Nature of Matter and Radiation Questions: MCQs on Dual Nature of Matter and Radiation for JEE Main and NEET, Test Number 02
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1. Question4 points
Light of wavelength λA and λB falls on two identical metal plates A and B respectively. The maximum kinetic energy of photoelectrons in KA and KB respectively, then which one of the following relations is true ? (λA = 2 λB) [MH CET 2014]Correct
2. Question4 points
If the kinetic energy of the particle is increased to 16 times its previous value, the percentage change in the de-Broglie wavelength of the particle is [AIPMT 2014]Correct
3. Question4 points
When the energy of the incident radiation is increased by 20%, the kinetic energy of the photoelectrons emitted from a metal surface increased from 0.5 eV to 0.8 eV. The work function of the metal is [AIPMT 2014]Correct
4. Question4 points
A photocell is illuminated by a small bright source placed 1 m away. When the same source of light is placed 1/2 m away , the number of electrons emitted by photocathode would [AIEEE 2005]Correct
5. Question4 points
Statement-1 : When ultraviolet light is incident on a photocell, its stopping potential is V0 and the maximum kinetic energy of the photoelectrons is Kmax. When the ultraviolet light is replaced by X-rays, both V0 and Kmax increase.
Statement-2 : Photoelectrons are emitted with speeds ranging from zero to a maximum value because of the range of frequencies present in the incident light.Correct