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NIKITA PUBLICATION-ELECTRONS AND PHOTONS -MCQs
- 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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- The photoelectric work function for potassium is 2 eV . The light of w...
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- If the photoelectric work function of a metal is 5 eV , the threshold ...
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- A charged water drop of weight 4 xx 10^(-18) kg and charge 1.6 xx 10^(...
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- 10^(20) photons of wavelength 660 nm are emitted per second from a lam...
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- A radio station operates at a frequency of 108.7 MHz with power out pu...
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- Work function of tungsten and sodium are 4.4 eV and 2.3 eV respectivel...
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- An ultraviolet light of wavelength 2000 Å irradiates a photo cell made...
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- Light of two different frequencies whose photons have energies 1eV and...
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- Light of wavelength 2200 Å falls on a metal surface . If 4.1 eV energy...
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- Light of wavelength 5000 Å and intensity of 3.96 xx 10^(-3) watt//cm^(...
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- When the light source is kept 20 cm away from a photo cell, stopping p...
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- Light of frequency 1.5 times the threshold frequency is incident on a ...
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