CBSE Class 10 Science 2017 · Paper 31(B)/C · Question 31
A student has to determine the focal length of a given convex lens by focusing a distant object on a screen, for this experiment he should have
- (a)convex lens and screen
- (b)convex lens, lens holder and screen
- (c)lens holder and scale
- (d)convex lens, screen, holders for both and scale
Answer
(d) convex lens, screen, holders for both and scale
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