Question

11. An object, a convex lens of focal length 20 cm and a plane mirfor are arranged as shown in
figure. How far behind the mirror is the position of the final image of the object?

1) 40 cm. 2)30 cm
3)20 cm. 4)10 cm​

Answer 1

Answer:

20 cm

Step-by-step explanation:

can't explain in message it can be understood in coy