Podcast
Play an AI-generated podcast conversation about this lesson
Questions and Answers
What happens to the focal length of a lens when it is placed in a medium of higher refractive index?
What happens to the focal length of a lens when it is placed in a medium of higher refractive index?
- It remains the same
- It increases
- It decreases (correct)
- It becomes zero
Which of the following phenomena is responsible for the formation of a rainbow?
Which of the following phenomena is responsible for the formation of a rainbow?
- Dispersion (correct)
- Refraction
- Reflection
- Diffraction
What happens to the image distance when an object is placed between the focus and the optical center of a convex lens?
What happens to the image distance when an object is placed between the focus and the optical center of a convex lens?
- It becomes positive
- It remains the same
- It becomes negative (correct)
- It becomes zero
Study Notes
Lens and Refractive Index
- When a lens is placed in a medium of higher refractive index, its focal length decreases.
Rainbow Formation
- The phenomenon responsible for the formation of a rainbow is refraction, combined with dispersion and internal reflection.
Convex Lens Image Distance
- When an object is placed between the focus and the optical center of a convex lens, the image distance is greater than the object distance.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
Test your understanding of ray optics with this class 12 quiz. Answer questions about focal length in different mediums, the formation of rainbows, and image distance in convex lenses. Sharpen your knowledge of these key concepts in optics.
