General Physics Questions And Answers


Q1. 
Which theory of light explains the photoelectric effect?

Ans.
Electromagnetic theory


Q2. 
Which theory of light is wave theory or particle theory?

Ans.
Quantum mechanics


Q3. 
Which principle suggests that the intensity of light determines its amplitude?

Ans.
Classic wave theory


Q4. 
Wave theory explains the photoelectric effect.

Ans.
False


Q5. 
Why does light travel as a wave?

Ans.
Due to its electromagnetic nature


Q6. 
If an α-particle collides head-on with a nucleus, what is its impact parameter?

Ans.
Zero


Q7. 
In which of the following system, will the radius of the first orbit (n=1) be minimum?

Ans.
Doubly ionized lithium


Q8. 
Which source is associated with a line emission spectrum?

Ans.
Neon street sign


Q9. 
According to the uncertainty principle for an electron, time measurement will become uncertain if which of the following is measured with high certainty?

Ans.
Energy


Q10. 
The Bohr model of atoms uses Einstein’s photoelectric equation.

Ans.
False