When the temperature of a silicon sample- is increased from 20 -C to 100 -C- its conductivity will-

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Byju's Answer

Standard XII

Physics

Electric Field inside a Conductor under Electrodynamic Conditions

When the temp...

Question

When the temperature of a silicon sample, is increased from $20^{\circ} C$ to $100^{\circ} C$ , its conductivity will,

increase

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

decrease

No worries! We‘ve got your back. Try BYJU‘S free classes today!

remain same

No worries! We‘ve got your back. Try BYJU‘S free classes today!

may increase or decrease

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is A increase
As the temperature of a pure semiconductor is increased, the number free electrons increase due to the extra thermal energy available so that its resistivity will decrease.
So, the conductivity of silicon will increase.

Hence, $(A)$ is the correct answer.

Suggest Corrections

Similar questions

Q. Find the heat transferred to the water, when the temperature of a 20-gram sample of water is increased from

10^{o}

C to

30^{o}

Q. When the temperature of a

20

gram sample of water is increased from

10^{\circ} C

30^{\circ} C

, the heat absorbed by the water is

Q. Estimate the proportion of boron impurity which will increase the conductivity of a pure silicon sample by a factor of

100

. Assume that each boron atom creates a hole, and the concentration of holes in pure silicon at the same temperature is

7 \times 10^{15}

holes per cubic meter. Density of silicon is

5 \times 10^{28}

atoms per cubic meter.

Estimate the proportion of boron impurity which will increase the conductivity of a pure silicon sample by a factor of 100. Assume that each boron atom creates a hole and the concentration of holes in pure silicon at the same temperature is $7 \times 10^{15}$ holes per cubic metre. Density of silicon is $5 \times 10^{28}$ atoms per cubic metre.

Q. The rate constant of a first order reaction is doubled when the temperature is increased from

20^{o} C

25^{o} C

. How many times the rate constant will increase if the temperature is raised from

20^{o} C

40^{o} C

Join BYJU'S Learning Program

When the temperature of a silicon sample, is increased from 20 ∘C to 100 ∘C, its conductivity will,

The correct option is A increaseAs the temperature of a pure semiconductor is increased, the number free electrons increase due to the extra thermal energy available so that its resistivity will decrease. So, the conductivity of silicon will increase. Hence, (A) is the correct answer.

When the temperature of a silicon sample, is increased from $20^{\circ} C$ to $100^{\circ} C$ , its conductivity will,

The correct option is A increase
As the temperature of a pure semiconductor is increased, the number free electrons increase due to the extra thermal energy available so that its resistivity will decrease.
So, the conductivity of silicon will increase.

Hence, $(A)$ is the correct answer.