General Physics Questions And Answers


Q1. 
The magnification of ‘X’ is more than unity. Identify X.

Ans.
Concave mirror


Q2. 
What happens to the shining of diamond if it is dipped in a transparent oil?

Ans.
Reduces


Q3. 
Which type of waves shows the property of polarization?

Ans.
Transverse


Q4. 
What are sunglasses made of?

Ans.
Polaroids


Q5. 
Which field vector is used to represent the polarization of an em wave?

Ans.
Electric field vector


Q6. 
When is the wave interference strong?

Ans.
When the paths taken by all of the interfering waves are lesser than the coherence length


Q7. 
A light wave enters from air into glass. How will the energy of the wave be affected?

Ans.
Decreases


Q8. 
When a wave undergoes reflection at a denser medium, what will be the phase change?

Ans.
π radian


Q9. 
Two wave-fronts intersect each other.

Ans.
False


Q10. 
A light wave enters from air into glass. How will the frequency of the wave be affected?

Ans.
Remains unchanged