Optical Diodes MCQs with Answers PDF – Download Test 156

MCQ 776: Optical diodes are of:

1. two types
2. three types
3. four types
4. five types

MCQ 777: Material which in its pure state is neither a good conductor nor a good insulator is known as:

1. insulator
2. conductor
3. semiconductor
4. superconductor

MCQ 778: LASER stands for:

1. Light Amplification by Stimulated Emission of Radiation
2. Light Amplification by System Emission of Radiation
3. Light Amplification by System Emitter of Radiation
4. Light Amplitude by Stimulated Emission of Radiation

MCQ 779: If n is charge mobility then total conductivity of conductor is given by:

1. n Ω_holes Ω_electrons
2. n( Ω_holes+ Ω_electrons)
3. Ω_holes+n Ω_electrons
4. n Ω_holes+ Ω_electrons

MCQ 780: Semiconductor material doped with trivalent impurity is called:

1. n-type
2. p-type
3. intrinsic-type
4. neutral-type