Questions and Solutions

Class: 12 Subject: Physics Type: Long

Question 1:

Derive lens formula.

Class: 12 Subject: Physics Type: Long Year: 1000

Question 2:

1. What are the laws of reflection??Explain the relationship between the angle of incidence and the angle of reflection.

Class: 12 Subject: Physics Type: Long Year: 1000

Question 3:

2. What is refraction??How does light bend when it passes from one medium to another (e.g., air to water)?

Class: 12 Subject: Physics Type: Long Year: 1000

Question 4:

3. What are lenses??Explain the difference between convex and concave lenses and how they affect light rays.

Class: 12 Subject: Physics Type: Long Year: 1000

Question 5:

4. What is total internal reflection??Describe the conditions necessary for total internal reflection to occur and its applications.

Class: 12 Subject: Physics Type: Long Year: 1000

Question 6:

5. What is dispersion of light??Explain how a prism separates white light into its constituent colors.

Class: 12 Subject: Physics Type: Long Year: 1000

Question 7:

6. What are the different types of optical instruments??Explain how telescopes, microscopes, and cameras work.

Class: 12 Subject: Physics Type: Long Year: 1000

Question 8:

7. What is the wave nature of light??Explain the concepts of interference and diffraction of light.

Class: 12 Subject: Physics Type: Long Year: 1000

Question 9:

8. How does Huygens' principle explain reflection and refraction?

Class: 12 Subject: Physics Type: Long Year: 1000

Question 10:

9. What is polarization of light??How can light be polarized, and what are its applications?

Class: 12 Subject: Physics Type: Long Year: 1000

Question 11:

10. What are some common vision defects and how are they corrected using lenses?

Class: 12 Subject: Physics Type: Long Year: 1000

Question 12:

10. What are some common vision defects and how are they corrected using lenses?