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The Electrical Conductivity of Pure Germanium Can Be Increased by (A) Increasing the Temperature (B) Doping Acceptor Impurities (C) Doping Donor Impurities (D) Irradiating Ultraviolet Light on It. - Physics

Short Note

The electrical conductivity of pure germanium can be increased by
(a) increasing the temperature
(b) doping acceptor impurities
(c) doping donor impurities
(d) irradiating ultraviolet light on it.

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Solution

(a) increasing the temperature
(b) doping acceptor impurities
(c) doping donor impurities
(d) irradiating ultraviolet light on it

We know that the conductivity of any semiconductor can be increased by increasing the number of charge carriers. All the given methods are effective in increasing the number of free charge carriers. Hence, all options are correct.

Concept: Energy Bands in Conductors, Semiconductors and Insulators
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APPEARS IN

HC Verma Class 11, Class 12 Concepts of Physics Vol. 2
Chapter 23 Semiconductors and Semiconductor Devices
MCQ | Q 5 | Page 418
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