General Physics Questions And Answers


Q1. 
If the intensity of incident radiation in a photo-cell is increased, how does the stopping potential vary?

Ans.
Remains the same


Q2. 
If the frequency of the incident radiation is equal to the threshold frequency, what will be the value of the stopping potential?

Ans.
0


Q3. 
How does retarding potential vary with the frequency of light causing photoelectric effect?

Ans.
Increases


Q4. 
If the intensity of the radiation incident on a photo-sensitive plate is doubled, how does the stopping potential change?

Ans.
No effect


Q5. 
The stopping potential in photoelectric emission does not depend upon the frequency of the incident radiation.

Ans.
False


Q6. 
How many types of electron emissions exist?

Ans.
4


Q7. 
Which of the following are quick electron emissions?

Ans.
Field emission


Q8. 
Thermionic emission is dependent on temperature.

Ans.
True


Q9. 
What is the valence electron in alkali metal?

Ans.
s-electron


Q10. 
Which of the following did Bohr use to explain his theory?

Ans.
The quantization of angular momentum