Dual Nature of Matter and Radiation questions
494 published questions with worked solutions.
- Given below are two statements: Statement I: Stopping potential in photoelectric effect does not depend on the power of the light...
- Electron beam used in an electron microscope, when accelerated by a voltage of 20 kV, has a de-Broglie wavelength of _0. If the...
- The ratio of de-Broglie wavelength of an particle and a proton accelerated from rest by the same potential is 1 m , the value of...
- The threshold wavelength for photoelectric emission from a material is 5500 Å. Photoelectrons will be emitted, when this material...
- An electron accelerated through a potential difference V_1 has a de-Broglie wavelength of . When the potential is changed to V_2,...
- A small object at rest, absorbs a light pulse of power 20 mW and duration 300 ns. Assuming speed of light as 3 10^8m/s, the...
- A point source of light is placed at the centre of curvature of a hemispherical surface. The source emits a power of 24 W. The...
- If the two metals A and B are exposed to radiation of wavelength 350 nm. The work functions of metals A and B are 4.8 eV and 2.2...
- Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R Assertion A : The beam of...
- A radiation of energy E falls normally on a perfectly reflecting surface. The momentum transferred to the surface is
- According to EInstein's photoelectric equation, the plot of the kinetic energy of the emitted photo electrons from a metal V_s...
- The work function of a substance is 4.0eV. Then longest wavelength of light that can cause photoelectron emission from this...
- A photocell is illuminated by a small bright source placed 1 m away. When the same source of light is placed 12 m away, the...
- If the kinetic energy of a free electron doubles. Its deBroglie wavelength changes by the factor
- The time by a photoelectron to come out after the photon strikes is approximately
- The threshold frequency for a metallic surface corresponds to an energy of 6.2eV, and the stopping potential for a radiation...
- Photon of frequency v has a momentum associated with it. If c is the velocity of light, the momentum is
- The surface of a metal is illuminated with the light of 400 nm. The kinetic energy of the ejected photoelectrons was found to be...
- Statement-1 : When ultraviolet light is incident on a photocell, its stopping potential is V_0 and the maximum kinetic energy of...
- This question has Statement −1 and Statement −2. Of the four choices given after the statements, choose the one that best...
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