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NEET PREVIOUS YEAR (YEARWISE + CHAPTERWISE)-ELECTRONS AND PHOTONS-All Questions
- 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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- When light of wavelength 300 nm (nanometre) falls on a photoelectric e...
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- An ionization chamber with parallel conducting plates as anode and cat...
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- The cathode of a photoelectric cell is changed such that the work func...
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- Photoelectric work- function of a metal is 1 eV. Light of wavelength l...
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- Wavelength of a 1 ke V photon is 1.24 xx 10^(-9) m. What is the freque...
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- The momentum of photon of electromagnetic radiation is 3.3xx10^(-29)kg...
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- A radio transmitter operates at a frequency of 880 kHz and a power of ...
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