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1
AIEEE 2006
MCQ (Single Correct Answer)
+4
-1
If the ratio of the concentration of electrons to that of holes in a semiconductor is $${7 \over 5}$$ and the ratio of currents is $${7 \over 4},$$ then what is the ratio of their drift velocities?
A
$${5 \over 8}$$
B
$${4 \over 5}$$
C
$${5 \over 4}$$
D
$${4 \over 7}$$
2
AIEEE 2006
MCQ (Single Correct Answer)
+4
-1
A solid which is not transparent to visible light and whose conductivity increases with temperature is formed by
A
Ionic bonding
B
Covalent bonding
C
Vander Waals bonding
D
Metallic bonding
3
AIEEE 2006
MCQ (Single Correct Answer)
+4
-1
The circuit has two oppositively connected ideal diodes in parallel. What is the current following in the circuit?

AIEEE 2006 Physics - Semiconductor Question 177 English
A
$$1.71$$ $$A$$
B
$$2.00$$ $$A$$
C
$$2.31$$ $$A$$
D
$$1.33$$ $$A$$
4
AIEEE 2006
MCQ (Single Correct Answer)
+4
-1
In the following, which one of the diodes is reverse biased?
A
AIEEE 2006 Physics - Semiconductor Question 176 English Option 1
B
AIEEE 2006 Physics - Semiconductor Question 176 English Option 2
C
AIEEE 2006 Physics - Semiconductor Question 176 English Option 3
D
AIEEE 2006 Physics - Semiconductor Question 176 English Option 4
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