27. Focal length of a convex lens will be maximum for ?

27. Focal length of a convex lens will be maximum for ?


(a) blue light

(b) yellow light

(c) green light

(d) red light


Answer :  (d) red light











Labels: , , ,

No comments:

Post a Comment

Please provide your valuable feedback. Students, Parents, Teachers.

Subscribe to: Post Comments (Atom)