Question

an object of size 3cm is placed at a distance of 15cm from a convex lence of focal length 10cm calculate the distance and size of image so formed​

Answer 1

Answer:

Answer

Explanation:

Measure distance BC. It will be found to be equal to 6 cm. Thus, object is placed at a distance of 6 cm × 5 = 30 cm from the lens. A concave lens of focal length 15 cm forms an image 10 cm from the lens.