When N- type of semiconductor is heated - Vidyadip

MCQ

When $N-$ type of semiconductor is heated

A
Number of electrons increases while that of holes decreases
B
Number of holes increases while that of electrons decreases
C
Number of electrons and holes remains same
✓
Number of electrons and holes increases equally

✓

Answer

Correct option: D.

Number of electrons and holes increases equally

d
(d)When a free electron is produced, simultaneously a hole is also produced.

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

NEET STD 11 Science question papers→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

A composite heavy rope of two materials is suspended vertically from a high ceiling. The ratios of different quantities for upper to lower rope are length $\frac{{{L_u}}}{{{L_l}}} = \frac{1}{2}$ , cross sectional area $\frac{{{A_u}}}{{{A_l}}} = \frac{2}{1}$ ,density $\frac{{{d_u}}}{{{d_l}}} = \frac{2}{3}$ .What is the ratio of maximum stress in the two ropes

In $Y.D.S.E$. using light of wavelength $\lambda$, intensity of light at a point on the screen with path differnce $\lambda$ is $M$ unit. Calculate intensity of light at a point where path difference is $\frac{\lambda }{3}$ is

The kinetic energy and the potential energy of a particle executing $S.H.M.$ are equal. The ratio of its displacement and amplitude will be

To find the resistance of a galvanometer by the half deflection method the following circuit is used with resistances $R_1 = 9970\,\Omega,$ $R_2 = 30\,\Omega$ and $R_3 = 0\,\Omega.$ The deflection in the galvanometer is $d$. With $R_3 = 107\,\Omega$ the deflection changed to $\frac {d}{2}$The galvanometer resistance is approximately ............... $\Omega$

Two identical wires of rubber and iron are stretched by the same weight, then the number of atoms in the iron wire will be

Two bodies of mass $3\, kg$ and $4\, kg$ are suspended at the ends of massless string passing over a frictionless pulley. The acceleration of the system is ........ $m/{s^2}$ $(g = 9.8\,m/{s^2})$

The position vector of a particle is $\vec r = (a\cos \omega t)\hat i + (a\sin \omega t)\hat j$. The velocity of the particle is

Which of the following has negative temperature coefficient of resistance

A projectile is fired with a speed $u$ at an angle $\theta$ with the horizontal. Its speed when its direction of motion makes an angle ‘$\alpha $’ with the horizontal is

The focal length of an objective of a telescope is $3 metre$ and diameter $15 cm.$ Assuming for a normal eye, the diameter of the pupil is $3 mm$ for its complete use, the focal length of eye piece must be......$cm$