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

Gujarat BoardEnglish MediumSTD 12 SciencePhysicsDual Nature of Radiation and Matter1 Mark
MCQ
A graph of vacuum diode current $I_p$, is plotted against the anode voltage $V_p$ for two different temperatures $T_1$ and $T_2$ 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 $T_1$ to $T_2$ higher temperature. 
  • A
    More number of electron undergo collision
  • ✓
    More electrons are emitted
  • C
    Resistance increases
  • D
    Voltage increases
✓

Answer

Correct option: B.
More electrons are emitted

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