An object is at a distance of 20 m from a convex lens of focal length 0.3 m. The lens forms an image of the object. If the object moves away from the lens at a speed of 5 m/s, the speed and direction of the image will be :
1.16 $ \times $ 10–3 m/s towards the lens
2.26 $ \times $ 10–3 m/s away from the lens
3.22 × 10–3 m/s towards the lens
0.92 $ \times $ 10$-$3 m/s away from the lens
Solution
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