focal length

Lenses

Last Updated on March 20, 2019 By Mrs Shilpi Nagpal Leave a Comment

Question 1 Define optical centre? Question 2 Define principal focus? Question 3 Define focal length? Question 4 Define principal foci? Question 5 Define first focal plane? Question 6 Define first principal focus? Question 7 Define second principal focus? Question 8 What do you mean by aperture of lens? Question 9 What are converging lenses? Question … [Read more...] about Lenses

Types of Spherical Mirror

Last Updated on May 4, 2020 By Mrs Shilpi Nagpal 5 Comments

Question 1 What is a concave mirror? Question 2 What is a convex mirror? Question 3 Define centre of curvature? Question 4 Define the term pole? Question 5 Define the term aperture? Question 6 What is principal focus? Question 7 what is principal axis? Question 8 What is focal plane? Question 9 What is focal length? Question 10 Write Sign conventions … [Read more...] about Types of Spherical Mirror