MCQ
When a hole is produced in P-type semiconductor, there is ……………….
  • A
    extra electron in valence band.
  • B
    extra electron in conduction band.
  • missing electron in valence band.
  • D
    missing electron in conduction band.

Answer

Correct option: C.
missing electron in valence band.
missing electron in valence band.

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

Similar questions

If $\vec{A}=\hat{i}+2 \hat{j}+3 \hat{k}$ and $\overrightarrow{ B }=3 \hat{ i }-2 \hat{ j }+\hat{ k }$, then the area of parallelogram formed from these vectors as the adjacent sides will be
A stationary body of mass 3 kg explodes into three equal pieces. Two of the pieces fly off at right angles to each other, one with a velocity \[2 \hat{i}\] m/s and the other with a velocity $3 \hat{j}$ m/s If the explosion takes place in $10^{-5}$ s, the average force acting on the third piece in newton is
A local train, travelling at 72 km/hr is brought to rest in 10 seconds by applying the brake. How much is the acceleration produced in this case? Also how much is distance (s) covered by the train before coming to rest?
In a projectile motion, velocity at maximum height is
An aeroplane takes off the ground after covering a distance of 800 m of runway in 16 s. Its acceleration will be
The magnitude of the $X$ and $Y$ components of $\vec{A}$ are 7 and 6 . Also the magnitudes of the $X$ and $Y$ components of $\vec{A}+\vec{B}$ are 11 and 9 respectively. What is the magnitude of
A bullet hits and gets embedded in a solid block resting on a horizontal frictionless table. What is conserved?
A boy playing on the roof of a 10 m high building throws a ball with a speed of 10 m $ s ^{-1}$ at an angle of $30^{\circ}$ with the horizontal. How far from the throwing point will the ball be at the height of 10 m from the ground? $\left( g =10 m s ^{-2}\right.$ $\left.\sin 30^{\circ}=\frac{1}{2}, \cos 30^{\circ}=\frac{\sqrt{3}}{2}\right)$ $ s ^{-1},$
The radius of the Earth and the radius of orbit around the Sun are $6371 km$ and $149 \times 10^6 km$ respectively. The order of magnitude of the diameter of the orbit is greater than that of Earth by
The unit vector along $\hat{i}+\hat{j}$ is