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NEET PREVIOUS YEAR (YEARWISE + CHAPTERWISE)-ELECTRONS AND PHOTONS-All Questions
- A photocell employs photoelectric effect to convert
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- A photosensitive metallic surface has work function , h v(0). If photo...
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- The work function for metals A , B and C are respectively 1.92 eV , 2....
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- According to Einstein's photoelectric equation , the graph between the...
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- A photoelectric cell is illuminated by a point source of light 1 m awa...
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- Which of the following is not the property of a cathode rays
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- If particles are moving with same velocity , then maximum de - Broglie...
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- A caesium photocell , with a steady potential difference of 60 V acros...
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- If we express the energy of a photon in KeV and the wavelength in angs...
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- As the intensity of incident light increases
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- The photoelectric work function for a metal surface is 4.125 eV. The c...
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- In a photoemissive cell, with exciting wavelength lambda, the faster e...
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- Light of wavelength 5000 Å falls on a sensitive plate with photoelectr...
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- The 21 cm radio wave emitted by hydrogen in interstellar space is due ...
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- An electron of mass m and charge e is accelerated from rest through a ...
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- The wavelength associated with an electron accelerated through a poten...
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- Kinetic energy of an electron accelerated in a potential difference of...
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- Gases begin to conduct electricity at low pressure because
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- In photoelectric effect the work function of a metal is 3.5 eV. The em...
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- Momentum of a photon of wavelength lambda is
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