AIPMT 2009 | Semiconductor Electronics Question 77 | Physics

AIPMT 2009

MCQ (Single Correct Answer)

-1

Sodium has body centred packing. Distance between two nearest atoms is 3.7 $$\mathop A\limits^ \circ $$. The lattice parameter is

4.3 $$\mathop A\limits^ \circ $$

3.0 $$\mathop A\limits^ \circ $$

8.6 $$\mathop A\limits^ \circ $$

6.8 $$\mathop A\limits^ \circ $$

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 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

If the lattice parameter for a crystalline structure is 3.6 $$\mathop A\limits^ \circ $$, then the atomic radius in fcc crystal is

2.92 $$\mathop A\limits^ \circ $$

1.27 $$\mathop A\limits^ \circ $$

1.81 $$\mathop A\limits^ \circ $$

2.10 $$\mathop A\limits^ \circ $$

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