Question

Pls! urgent answer these question!

Answer 1

Hey friend !

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As given in question , focal length of an convex lens is 25cm

For knowing radius of curvature , we know that

R = 2 f

R =2 x 25

R = 50.....or also called as centre of curvature. ( 2 f ¹ )

we know that , the object placed at 50cm distance or on centre of curvature ( 2f¹ ) will form image on 2f² of same size and real and inverted.

Object placed at 75cm or beyond centre of curvature ( 2f ¹ ) will form image between 2f² and f².... the image will be real and inverted and diminished.

# Hope it helps #

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