Choose the correct statement - Vidyadip

MCQ

Choose the correct statement

A
When we heat a semiconductor its resistance increases
✓
When we heat a semiconductor its resistance decreases
C
When we cool a semiconductor to $0 K$ then it becomes super conductor
D
Resistance of a semiconductor is independent of temperature

✓

Answer

Correct option: B.

When we heat a semiconductor its resistance decreases

With rise in temperature, conductivity of semiconductor increases while resistance decreases.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "MCQ" from Electronics→Electronics — all question types→JEE physics STD 12 Science question papers→CBSE Board STD 12 Science question papers→CBSE Board question paper generator→

Similar questions

A bulb rated at $(100 W -200 V )$ is used on a $100 V$ line. The current in the bulb is

A body revolved around the sun 27 times faster then the earth what is the ratio of their radii

The ammeter has range 1 ampere without shunt. the range can be varied by using different shunt resistances. The graph between shunt resistance and range will have the nature

A galvanometer with its coil resistance $25\,\Omega $ requires a current of $1\,mA$ for its full deflection. In order to construct an ammeter to read up to a current of $2\,A,$ the approximate value of the shunt resistance should be

Two short magnets placed along the same axis with their like poles facing each other repel each other with a force which varies inversely as

The variation of potential energy of harmonic oscillator is as shown in figure. The spring constant is

Two bodies of mass $10 kg$ and $5 kg$ moving in concentric orbits of radii $R$ and $r$ such that their periods are the same. Then the ratio between their centripetal acceleration is

Unit of self inductance is

If a current of $10 \mathrm{~A}$ flows in one second through a coil, and the induced e.m.f. is $10 V$, then the self-inductance of the coil is

The output in the circuit of figure is taken across a capacitor. It is as shown in figure