A classical mechanics problem by karandeep singh ludhar
Classical Mechanics
Level
3
A symmetric double convex lens is cut in two equal parts by a plane containing the principal axis . If the power the original lens was 4D , the power of a divided lens will be
2D
D
3D
4D
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1 solution
Since the focal length of a lens doesn't change when split by a horizontal plane, the power remains same.