General Physics Questions And Answers


Q1. 
Identify the property which is not characteristic for a semiconductor?

Ans.
The charge carriers are electrons and holes in the valence band at higher temperatures


Q2. 
The n-type semiconductor is which of the following?

Ans.
Neutral


Q3. 
The dominant contribution to current comes from holes in case of which of the following?

Ans.
p-type extrinsic semiconductors


Q4. 
In a p-type semiconductor, germanium is doped with which of the following?

Ans.
Gallium


Q5. 
What will happen when a p-n diode is reversed-biased?

Ans.
The depletion region is increased


Q6. 
How many main types of rectifiers are there?

Ans.
2


Q7. 
The ripple frequency of a full-wave rectifier is twice to that of a half-wave rectifier.

Ans.
True


Q8. 
Which of the following is operated in forward bias?

Ans.
LED


Q9. 
Which of the following converts light energy to electric current?

Ans.
Photodiode


Q10. 
Identify the one on which no external bias is applied.

Ans.
Solar cell