Explore topic-wise InterviewSolutions in .

This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.

1.

For a transistor the value of `alpha` is `0.9`. `beta` value isA. 0.9B. 90C. 9D. 90/11

Answer» Correct Answer - C
Discussion
2.

In a semiconductor the following statement is correct:A. At `0^(@)k`, Si is a super conductorB. In P-type semiconductor the acceptor level lies near the conduction bandC. Each donor atom contributes one holeD. P-N junction diode is electricity neutral

Answer» Correct Answer - D
Discussion
3.

The graph between photo electric current and cathode potential when the anode is kept at zero potential, for light of two different intensities out of the same frequency looks like the one:A. B. C. D.

Answer» Correct Answer - A
Discussion
4.

Light of two different frequencies whose photons have energies 1eV and 2.5 eV respectively illuminate a metallic surface whose work function is 0.5 eV successively. Ratio of maximum kinetic energy of emitted electrons will be:A. `1:4`B. `1:2`C. `1:1`D. `1:5`

Answer» Correct Answer - A
Discussion