Question:

In a p–n junction photocell, the value of the photo electromotive force produced by monochromatic light is proportional to

Updated On: Oct 9, 2023

  • The intensity of the light falling on the cell 

  • The frequency of the light falling on the cell

  • The voltage applied at the p–n junction

  • The barrier voltage at the p–n junction

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The Correct Option is A

Solution and Explanation

In a p-n junction photocell, the photo electromotive force generated by monochromatic light is directly proportional to the intensity of the incident light.
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Concepts Used:

Semiconductors

Semiconductors are a crystalline solid materials, whose electrical conductivity lies between a conductor and an insulator. Semiconductors are mainly used in the manufacturing of electronic devices like capacitors, transistors, diodes, Integrated circuits, etc.

Properties of Semiconductor:

  1. Semiconductor acts like an insulator at Zero Kelvin. On increasing the temperature, it works as a conductor.
  2. Due to their exceptional electrical properties, semiconductors can be modified by doping to make semiconductor devices suitable for energy conversion, switches, and amplifiers.
  3. Lesser power losses.

Uses of Semiconductor:

  1. Semiconductors are widely used in manufacturing electronics devices like transistors, diodes, sensors, integrated circuits.
  2. Semiconductors are widely used in all electronic devices, like mobile phones, digital cameras, communication devices, trains, ATMs, etc.