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NIKITA PUBLICATION-ELECTRONS AND PHOTONS -MCQs
- The photons are incident on a metallic surface of frequency n . If the...
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- An electron moving with a kinetic energy of 1.5 xx 10^(3) eV enters in...
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- An electron performs uniform circular motion in a region of magnetic f...
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- An electron of velocity 2.652 xx 10^(7) m/s enters a uniform magnetic ...
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- In an experiment to measure the charge on an electrons , the electrons...
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- An electron moving horizontally enters in a uniform electric field of ...
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- The potential difference through which an electron should be accelerat...
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- In a velocity selector , the intensity of the electric field is 3 xx 1...
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- In J.J. Thomson's experiment a potential difference of 600 V is applie...
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- The threshold wavelength for tungsten is 2730 Å . The work function of...
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- The wave number corresponding to threshold wavelength of a given metal...
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- The frequency and wavelength of radiation which has energy of 5 eV is
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- The photoelectric work function of a metal is 3 eV . The maximum kinet...
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- The threshold wavelength for a metal is 5000 Å . The maximum K.E. of t...
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- When the ultraviolet light of wavelength 1.8 xx 10^(-7) m falls on ce...
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- The light radiation of wavelength 6000 Å falls on a metal . The thresh...
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- When light of wavelength 2000 Å is incident on tungsten the maximum ve...
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- A photon of energy 12 V falls on metal surface whose work function is ...
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- The photoelectric work function of the emitter of a photocell is 3.63 ...
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- The threshold wavelength of a metal is 230 nm . The maximum K.E. of th...
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