NEET 2013 (Karnataka) | Semiconductor Electronics Question 48 | Physics

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.

NEET 2013 (Karnataka)

MCQ (Single Correct Answer)

-1

The output from a NAND gate is divided into two in parallel and fed to another NAND gate. The resulting gate is a

AND gate

NOR gate

OR gate

NOT gate

NEET 2013

MCQ (Single Correct Answer)

-1

The output (X) of the logic circuit shown ion figure will be

X = A . B

X = $$\overline {A + B} $$

X = $$\overline {\overline A } .\overline {\overline B } $$

X = $$\overline {A.B} $$

NEET 2013

MCQ (Single Correct Answer)

-1

Out of Syllabus

In a n-type semiconductor, which of the following statement is true.

Holes are minority carries and pentavalent atoms are dopants.

Holes are majority carries and trivalent atoms are dopants.

Electrons are majority carries and trivalent atoms are dopants.

Electrons are minority carriers and pentavalent atoms are dopants.

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