Question

for an object place at a certain distance in front of a convex mirror the magnification produce is 0.8 . If the focal length of a convex mirror is 40 cm then find the distance of the object from the mirror ​

Answer 1

Explanation:

u=−60cm

u−v=21⇒−60−v=21

⇒v=30cm

⇒v1+u1=f1⇒f1=301+−601⇒f1=602−1=601

⇒f=60cm

Now magnification=31

u−v=31⇒v=3−u∴v1+u1=