AIPMT 2014 | Semiconductor Electronics Question 47 | Physics

The barrier potential of a p-n junction depends on
(1)   type of semiconductor material
(2)   amount of doping

(3)   temperature

Which one of the following is correct ?

(1) and (2) only

(2) only

(2) and (3) only

(1), (2) and (3)

AIPMT 2014

MCQ (Single Correct Answer)

-1

The given graph represents V-I characteristic for a semiconductor device.

AIPMT 2014 Physics - Semiconductor Electronics Question 100 English

Which of the following statement is correct ?

It is V-I characteristic for solar cell where, point A represents open circuit voltage and point B short circuit current.

It is for a solar cell and popints A and B represent open circuit voltage and current, respectively.

It is for a photodiode and points A and B represent open circuit voltage and current, respectively.

It is for a LED and points A and B represent open circuit voltage and short circuit current, respectively.

NEET 2013 (Karnataka)

MCQ (Single Correct Answer)

-1

One way in which the operation of a n-p-n transistor differs from that of a p-n-p

The emitter junction injects minority carries into the base region of the p-n-p

The emitter injects holes into the base of the p-n-p and electrons into the base region of n-p-n

The emitter injects holes into the base of n-p-n

The emitter junction is reversed biased in n-p-n

NEET 2013 (Karnataka)

MCQ (Single Correct Answer)

-1

In an unbiased p-n junction, holes diffuse from the p-region to n-region because of

The attraction of free electrons of n-region.

The higher hole concentration in p-region than that in n-region.

The higher concentration of electrons in the n-region than that in the p-region.

The potential difference across the p-n junction.

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