Semiconductor Electronics : Materials, Devices and Simple Circuits

Semiconductor Electronics : Materials, Devices and Simple Circuits

Easy Questions

Modern Physics

Dual Nature of Radiation and Matter
Atoms
Nuclei
Semiconductor Electronics : Materials, Devices and Simple Circuits
  1. The depletion layer in the p-n junction region is caused by








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    The depletion layer in the p-n junction region is caused by diffusion of charge carriers.

    Correct Option: B

    The depletion layer in the p-n junction region is caused by diffusion of charge carriers.

  1. For an electronic valve, the plate current I and plate voltage V in the space charge limited region are related as








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    According to Child’s Law,
    Ia = KVa3/2
    Thus, I ∝ V3/2

    Correct Option: A

    According to Child’s Law,
    Ia = KVa3/2
    Thus, I ∝ V3/2

  1. Which one of the following is the weakest kind of  bonding in solids








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    Vander Waal’s bonding is the weakest bonding  in solids.

    Correct Option: C

    Vander Waal’s bonding is the weakest bonding  in solids.

  1. Diamond is very hard because​








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    Diamond is very hard due to large cohesive energy.

    Correct Option: B

    Diamond is very hard due to large cohesive energy.

  1. A piece of copper and other of germanium are cooled from the room temperature to 80 K, then​​








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    Copper is a conductor, so, its resistance decreases on decreasing temperature as thermal agitation decreases whereas germanium is semiconductor,  therefore,  on decreasing temperature resistance increases.

    Correct Option: D

    Copper is a conductor, so, its resistance decreases on decreasing temperature as thermal agitation decreases whereas germanium is semiconductor,  therefore,  on decreasing temperature resistance increases.