Q. 295.0( 2 Votes )

A student obtaine A. Concaveand F1 <F2

B. Convex and F1 < F2

C. Convex and F1 > F2

D. Concave and F1 > F2

Answer :

The correct answer is: option (b)

Both of the lenses given to the student were convex lens and the focal length of second lens is greater than the focal length of the first lens. Since the object was obtained on the screen, so the image formed was real. So, the lens is convex lens. The object distance is decreasing because the image distance is increasing. So, F1 < F2.

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