General Physics Questions And Answers


Q1. 
What should be the order of the size of an obstacle or aperture for diffraction light?

Ans.
Order of wavelength of light


Q2. 
A small circular disc is placed in the path of light from a distant source. Identify the nature of the fringe produced.

Ans.
Bright


Q3. 
Single slit diffraction is completely immersed in water without changing any other parameter. How is the width of the central maximum affected?

Ans.
Decreases


Q4. 
Diffraction is common in light waves.

Ans.
False


Q5. 
In Young’s double-slit experiment with monochromatic light, how is fringe width affected, if the screen is moved closer to the slits?

Ans.
Increases


Q6. 
Which crystal is used in the Davisson – Germer experiment?

Ans.
Nickel


Q7. 
Intensity is different for different angles of scattering in the Davisson – Germer experiment.

Ans.
True


Q8. 
What type of nature do electromagnetic waves have?

Ans.
Dual nature


Q9. 
The magnitude of which of the following is proportional to the frequency of the wave?

Ans.
Photons


Q10. 
When the wavelength of an electron increases, the velocity of the electron will also increase.

Ans.
False