An object is at a distance of 20 m from a convex lens of focal length 0.3 m
PHYSICS · Single correct · CBSE · Physics · Light — Reflection and Refraction · Light — Reflection and Refraction
Problem
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) 2.26×10−3 m/s away from the lens
(2) 0.92×10−3 m/s away from the lens
(3) 3.22×10−3 m/s towards the lens
(4) 1.16×10−3 m/s towards the lens