A ball is approaching a convex mirror of focal length 30 cm with speed 20 m/s. Calculate the speed of its image when the ball was at 5 m from the mirror?
62.An object is placed at a distance of 20 cm from a convex mirror of focal length 25 cm. Calculate the position of the image?Discuss its nature??
![A convex lens of focal length 30 cm forms an image of height 2 cm of an object placed far away. A concave lens of focal length 20 cm is placed at A convex lens of focal length 30 cm forms an image of height 2 cm of an object placed far away. A concave lens of focal length 20 cm is placed at](https://dwes9vv9u0550.cloudfront.net/images/2556792/ee351d81-41df-4aff-95f7-0d334f91dfb8.jpg)
A convex lens of focal length 30 cm forms an image of height 2 cm of an object placed far away. A concave lens of focal length 20 cm is placed at
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