AIPMT 2008 | Semiconductor Electronics Question 79 | Physics

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AIPMT 2008

MCQ (Single Correct Answer)

-1

Out of Syllabus

The voltage gain of an amplifier with 9% negative feedback is 10. The voltage gain without feedback will be

1.25

100

AIPMT 2008

MCQ (Single Correct Answer)

-1

A p-n photodiode is made of a material with a band gap of 2.0 eV. The minimum frequency of the radiation that can be absorbed by the material is nearly

1 $$ \times $$ 10¹⁴ Hz

20 $$ \times $$ 10¹⁴ Hz

10 $$ \times $$ 10¹⁴ Hz

5 $$ \times $$ 10¹⁴ Hz

AIPMT 2007

MCQ (Single Correct Answer)

-1

In the energy band diagram of a material shown below, the open circles and filled circles denote holes and electrons respectively. The material is

AIPMT 2007 Physics - Semiconductor Electronics Question 60 English

AIPMT 2007 Physics - Semiconductor Electronics Question 60 English

an insulator

a metal

an n-type semiconductor

a p-type semiconductor.

AIPMT 2007

MCQ (Single Correct Answer)

-1

For a cubic crystal structure which one of the following relations indicating the cell characteristics is correct ?

a $$ \ne $$ b $$ \ne $$ c and $$\alpha $$ = $$\beta $$ = $$\gamma $$ = 90^o

a = b = c and $$\alpha $$ $$ \ne $$ $$\beta $$ $$ \ne $$ $$\gamma $$ = 90^o

a = b = c and $$\alpha $$ = $$\beta $$ = $$\gamma $$ = 90^o

a $$ \ne $$ b $$ \ne $$ c and ;$$\alpha $$ $$ \ne $$ $$\beta $$ $$ \ne $$ and $$\gamma $$ = 90^o

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