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If you are to determine to focal length of a convex lens, you should have(A) a convex lens and a screen(B) a convex lens and a lens holder(C) a lens

holder, a screen holder and a scale(D) a convex lens, a screen, holder for them and a scale


The option D will be the right one..........
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hope it helps
A convex lens, a screen, holders for them and a scale are required in order to determine the focal length of a convex lens.The Correct Answer is D
yaa, it is the right answer.. i agree with u Mr. Rishilaugh..
thanks cuteritu
u r welcome..
Option d is the correct option.
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