A convex lens is put | GEOMETRICAL OPTICS

JEE Main 2019

9-01-2019 S1

Question

A convex lens is put 10 cm from a light source and it makes a sharp image on a screen, kept 10 cm from the lens. Now a glass block (refractive index 1.5) of 1.5 cm thickness is placed in contact with the light source. To get the sharp image again, the screen is shifted by a distance d. Then d is

Select the correct option:

1.1 cm away from the lens

0.55 cm towards the lens

$0$

0.55 cm away from the lens

✓ Correct! Well done.

✗ Incorrect. Try again or view the solution.

Solution