1000+ Physics MCQ Questions and Answers Pdf - 2

Question: 6

In a Colpitt’s oscillator circuit

(A) no capacitor is used

(B) no tuned LC circuits is used

(C) tapped coil is used

(D) capacitive feedback is used

Question: 7

The circuit capable of manifying the amplitude of weak signals is called

(A) oscillator

(B) rectifier

(C) amplifier

(D) none of the above

Question: 8

The process of addition of a very small amount of impurity into an intrinsic semiconductor is called

(A) alloying

(B) mixing

(C) doping

(D) none of these

Question: 9

A steady d.c. output voltage can be obtained with the help of

(A) d.c. alternator

(B) rectifier circuits

(C) filter networks

(D) none of the above

Question: 10

The physically larger region in a transistor, is

(A) emitter

(B) base

(C) both a and c

(D) collector