The focal length of a thin convex-lens is 30cm. At a distance of 10 cm from the lens there is
Channel: Doubtnut
Date: 2020-07-26

The focal length of a thin convex-lens is 30cm. At a distance of 10 cm from the lens there is a plane refracting surface fo refractive inidex `3//2` Where will parallel rays incident on lens converge?  img src="https://d10lpgp6xz60nq.cloudfront.net/physics_images/BMS_V04_C01_E01_125_Q01.png" width="80%"