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When light rays from the sun fall on a convex lens along a direction parallel to its axis

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 red colour is the shortest


Question ID - 152281 | Toppr Answer

When light rays from the sun fall on a convex lens along a direction parallel to its axis

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 red colour is the shortest

1 Answer - 5876 Votes

3537

Answer Key : (b) -

(b)

Focal length for violet colour is minimum



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