Dual Nature of Matter and Radiation questions
494 published questions with worked solutions.
- Given below are two statements : Statement I: Davisson-Germer experiment establishes the wave nature of electrons. Statement II:...
- A parallel beam of light of wavelength 900 nm and intensity 100 Wm^ -2 is incident on a surface perpendicular to the beam. The...
- A metal surface is illuminated by a radiation of wavelength 4500 Å. The ejected photo-electron enters a constant magnetic field...
- The stopping potential for photoelectrons emitted from a surface illuminated by light of wavelength 6630 Å is 0.42 V. If the...
- An electron with speed and a photon with speed c have the same de-Broglie wavelength. If the kinetic energy and momentum of...
- Consider two separate ideal gases of electrons and protons having same number of particles. The temperature of both the gases are...
- The threshold frequency of a metal is f_0. When the light of frequency 2f_0 is incident on the metal plate, the maximum velocity...
- The work functions of Aluminium and Gold are 4.1 eV and 5.1 eV respectively. The ratio of the slope of the stopping potential...
- An -particle and a proton are accelerated from rest by a potential difference of 100V. After this, their de Broglie wavelengths...
- A silver sphere of radius 1 cm and work function 4.7 eV is suspended from an insulating thread in free-space. It is under...
- A proton is fired from very far away towards a nucleus with charge Q = 120 e, where e is the electronic charge. It makes a...
- A pulse of light of duration 100 ns is absorbed completely by a small object initially at rest. Power of the pulse is 30 mW and...
- The work functions of Silver and Sodium are 4.6 and 2.3 eV, respectively. The ratio of the slope of the stopping potential versus...
- A metal surface is illuminated by light of two different wavelengths 248 nm and 310 nm. The maximum speeds of the photoelectrons...
- In a historical experiment to determine Planck's constant, a metal surface was irradiated with light of different wavelengths....
- In a photoelectric experiment a parallel beam of monochromatic light with power of 200 W is incident on a perfectly absorbing...
- Electron emission from a metallic surface by application of light is known as
- Who among the following has explained the phenomenon of photoelectric effect ?
- Light of uniform intensity impinges perpendicularly on a totally reflecting surface. If the area of the surface is halved, the...
- In a photoemission experiment, the maximum kinetic energies of photoelectrons from metals P, Q and R are E_P, E_Q and E_R,...
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