CBSE Physics Solids and Semiconductor Devices Test Online
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CBSE Physics Solids and Semiconductor Devices Test Online

Test Name Solids and Semiconductor Devices Test
Subject CBSE Physics
Test Type MCQs
Total Question 25
Total Marks 50
Total Time 20 Minutes
Test Help For
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CBSE has been at the forefront of the progress in the educational field in IndiaSolids and Semiconductor devices have replaced thermionic devices (vacuum tubes) in most applications. They use electronic conduction in the solid state as opposed to the gaseous state or thermionic emission in a high vacuum. In this topic test we provided best choices question answers for improve our students vocabulary level.

CBSE Physics Solids and Semiconductor Devices Test Online


1. To obtain a p-type germanium semiconductor, it must be doped with ?

Question 1 of 25

2. The current gain for a transistor working as common base amplifier is 0.96. If the emitter current is 7.2 mA, then the base current is ?

Question 2 of 25

3. The diode used in the circuit shown in the figure has a constant voltage drop of 0.5 V at all currents and a maximum power rating of 100 milliwatt. What should be teh value of the resistor R, connected in series with the diode, for obtaining maximum current i ?

Question 3 of 25

4. When a triode is used as an amplifier the phase difference between the input signal voltage and the out put is ?

Question 4 of 25

5. A piece of copper and other of germanium are cooled form the room temperature to 80 K, then ?

Question 5 of 25

6. When a n-p-n transistor is used as an amplifier, then ?

Question 6 of 25

7. Radiowaves of constant amplitude can be generated with ?

Question 7 of 25

8. For an electronic valve, the plate current i and plate voltage V in the space charge limited region are related as ?

Question 8 of 25

9. The part of the transistor which is heavily doped to produce large number of majority carriers is ?

Question 9 of 25

10. When a p-n junction diode is reverse biased the flow of current across the junction is mainly due to ?

Question 10 of 25

11. When n-type semiconductor is heated ?

Question 11 of 25

12. When arsenic is added as an impurity to silicon the resulting material is ?

Question 12 of 25

13. In a common base amplifier the phase difference between the input single voltage and the output voltage is ?

Question 13 of 25

14. The depletion layer in the p-n junction region is caused by ?

Question 14 of 25

15. The following truth table corresponds to the logical gate ?

Question 15 of 25

16. p-n junction is said to be forward biased, when ?

Question 16 of 25

17. At absolute zero, Si acts as ?

Question 17 of 25

18. An oscillator is nothing but an amplifier with ?

Question 18 of 25

19. For amplification by a triode the signal to be amplified is given to ?

Question 19 of 25

20. Diamond is very hard because ?

Question 20 of 25

21. In figure the input is across the terminals A and C and the output is across B and D. Then the output is ?

Question 21 of 25

22. Which of the following gates corresponds to the truth table given below ?

Question 22 of 25

23. To use a transistor as an amplifier ?

Question 23 of 25

24. Which one of the following is the weakest kind of the bonding in solids ?

Question 24 of 25

25. Which of the following, when added as an impurity, into the silicon, produces n-type semiconductor ?

Question 25 of 25


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