Dual Nature of Matter and Radiation questions
494 published questions with worked solutions.
- The maximum wavelength which a photodiode can detect with E_g = 0.74 eV is,
- Photocurrent in a photodiode depends upon
- By photo electric effect, Einstein proved :
- Which one among shows particle nature of light.
- A photo-cell is illuminated by a source of light, which is placed at a distance d from the cell. If the distance become d/2, then...
- If particles are moving with same velocity, then De-Broglie wavelength is maximum for :
- When ultraviolet rays incident on metal plate then photoelectric effect does not occur, it occurs by incidence of :
- A photoelectric cell is illuminated by a point source of light 1 m away. When the source is shifted to 2 m then -
- In a p-n junction photo cell, the value of the photo electromotive force produced by monochromatic light is proportional to: -
- A photo-cell employs photoelectric effect to convert:-
- When photons of energy h fall on an aluminium plate (of work function E_0), photoelectrons of maximum kinetic energy K are...
- The momentum of a photon of energy 1MeV in kg m/s, will be-
- A 5 watt source emits monochromatic light of wavelength 5000 . When placed 0.5 m away, it liberates photoelectrons from a...
- Monochromatic light of frequency 6.0 10^ 14 Hz is produced by a laser. The power emitted is 2 10^ -3 W . The number of photons...
- The work function of a surface of a photosensitive material is 6.2 eV. The wavelength of the incident radiation for which the...
- A particle of mass 1 mg has the same wavelength as an electron moving with a velocity of 3 10^6 ms ^ -1 . The velocity of the...
- A p-n photodiode is made of a material with a band gap of 2.0 eV. The minimum frequency of the radiation that can be absorbed by...
- The number of photo electrons emitted for light of a frequency (higher than the threshold frequency _0) is proportional to:
- When monochromatic radiation of intensity I falls on a metal surface, the number of photoelectrons and their maximum kinetic...
- The electron in the hydrogen atom jumps from excited state (n=3) to its ground state (n=1) and the photons thus emitted irradiate...
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