General Physics Questions And Answers


Q1. 
Sound waves can be polarized.

Ans.
False


Q2. 
Identify the property which is not mutually perpendicular to the polarized light wave in a plane.

Ans.
Plane of rotation


Q3. 
Which plane is defined as the plane of polarization in a plane-polarized electromagnetic wave?

Ans.
The plane containing the direction of propagation of light


Q4. 
State the essential condition for diffraction of light to occur.

Ans.
The size of the aperture must be comparable to the wavelength of light


Q5. 
What is the cause of diffraction?

Ans.
Interference of secondary wavelets


Q6. 
Which among the following isn’t a suitable phenomenon to establish that light is wave motion?

Ans.
Reflection


Q7. 
Identify the condition which is not necessary for two light waves to be coherent.

Ans.
They two light sources should be narrow


Q8. 
In Huygens’ theory, light waves are longitudinal and do not require a material medium for their propagation.

Ans.
False


Q9. 
Which theory is confirmed by the Davisson – Germer experiment?

Ans.
de – Broglie theory


Q10. 
Which of the following is used in the Davisson – Germer experiment?

Ans.
Electron gun