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Class XII Physics Semiconductors 4
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Question 1
The decimal equivalent of the binary number (11010, 101)2 is
Question 2
How many NAND gates are used in an OR gate?
Question 3
The output Y of the logic circuit shown in figure is best represented as
Question 4
To get an output y = 0 from the circuit shown in the figure, the input C must be
Question 5
A semiconductor has an electron concentration of 
per 
and a hole concentration of 
per 
. The electron mobility is 25000 
and the hole mobility is 100 
. Then,
Question 6
A piece of copper and the other of germanium are cooled from the room temperature to 80 K, then which of the following would be a correct statement?
Question 7
In semiconductor the concentrations of electrons and holes are 8 × 1018/m3 and 5 × 1018/m3 respectively. If the mobilities of electrons and holes are 2.3 m2/volt-s and 0.01 m2/volt-s respectively, then semiconductor is
Question 8
In a common base mode of a transistor, the collector current is 5.488 mA for an emitter current of 5.60 mA. The value of the base current amplification factor (
) will be
) will be- 657 attempts
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Jan 22JEE & BITSAT
