1
AIPMT 2008
MCQ (Single Correct Answer)
+4
-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
A
1 $$ \times $$ 1014 Hz
B
20 $$ \times $$ 1014 Hz
C
10 $$ \times $$ 1014 Hz
D
5 $$ \times $$ 1014 Hz
2
AIPMT 2008
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
The voltage gain of an amplifier with 9% negative feedback is 10. The voltage gain without feedback will be
A
1.25
B
100
C
90
D
10
3
AIPMT 2008
MCQ (Single Correct Answer)
+4
-1
If the lattice parameter for a crystalline structure is 3.6 $$\mathop A\limits^ \circ $$, then the atomic radius in fcc crystal is
A
2.92 $$\mathop A\limits^ \circ $$
B
1.27 $$\mathop A\limits^ \circ $$
C
1.81 $$\mathop A\limits^ \circ $$
D
2.10 $$\mathop A\limits^ \circ $$
4
AIPMT 2007
MCQ (Single Correct Answer)
+4
-1
Which one of the following represents forward bias diode ?
A
AIPMT 2007 Physics - Semiconductor Electronics Question 109 English Option 1
B
AIPMT 2007 Physics - Semiconductor Electronics Question 109 English Option 2
C
AIPMT 2007 Physics - Semiconductor Electronics Question 109 English Option 3
D
AIPMT 2007 Physics - Semiconductor Electronics Question 109 English Option 4
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