When light rays from the sun fall on a convex lens along a direction p – McqOptions

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1.	When light rays from the sun fall on a convex lens along a direction parallel to its axis [MP PMT 2004]
A.	Focal length for all colours is the same
B.	Focal length for violet colour is the shortest
C.	Focal length for yellow colour is the longest
D.	Focal length for red colour is the shortest
Answer» C. Focal length for yellow colour is the longest

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