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Dual Nature of Radiation and Matter — Physics STD 12 Science — Question

Bihar BoardEnglish MediumSTD 12 SciencePhysicsDual Nature of Radiation and Matter1 Mark
MCQ
A graph of vacuum diode current Ip​, is plotted against the anode voltage Vp​ for two different temperatures T1​ and T2​ of the cathode, as shown in the figure below. Study the graph and answer the following questions.
For the same anode voltage, (called plate voltage), the current more when the cathode temperature changes from T1​ to T2​ higher temperature.

  • A
    More number of electron undergo collision
  • B
    More electrons are emitted
  • C
    Resistance increases
  • D
    Voltage increases
✓

Answer

  1. More electrons are emitted

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