image formed on the screen seems to be inverted and smaller than object
(i) what type of mirror/ lens is used in the above experiment??
(a) concave mirror
(b) convex mirror
(c) concave lens
(d) convex lens
(ii) what is the focal length??
(a) 15 cm
(b) 30 cm
(c) 45 cm
(d) 60 cm
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Answer:
1) convex lens.
2)15cm.
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