Question

A student focused the image of a candle flame on a white screen by placing the flame at various distances from a convex lens. He noted his observations as :

Answer 1

Answer:

(a) u=30 cm, v = 30 cm This is possible if the object is placed at 2f  So, 2f =30 cm, f=15 cm (b) u=15 cm, v=70 cm is incorrect. This is because if the object is at focus then the image is formed at infinity. (c)In (lii) case, because the object is at the center of curvature.

Mark me brainliest

Answer 2

Answer:

Mark as brainliest

Explanation:

1A) 10

2A) 3

3D) 4

4C) 3