Study the given ray diagrams and select the correct statement from the following:

1. Device X is a concave mirror and device Y is a convex lens

(D) Device X is a convex lens and device Y is a concave mirror, whose focal lengths are 20 cm and 25 cm respectively.

Explanation

In the first case, the ray of light is converging on the screen, after getting refracted by device X, so it is a convex lens, as it gets refracted from the device.

In the first case, the ray of light is converging on the screen, after getting reflected by device Y, so it is a concave mirror, as it gets reflected from the device.

In both cases, the ray of light is converging on the screen. In the first case, it is refracted and in the second case, it is reflecting. Also, we know that only concave mirror and convex lens converges the light rays after reflection and refraction respectively.

Tutorialspoint

Updated on: 10-Oct-2022

64 Views

Kickstart Your Career

Get certified by completing the course

Get Started