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
Lenses
Last Updated on By Mrs Shilpi Nagpal Leave a Comment