Question

an object of height 3 cm is placed on the principal axis of a distance of 40 cm from a convex lens of focal length 20cm find image distance and height of the image write characters of the image​

Answer 1

Explanation:

u=−12cm

f=+8cm

ho=+3cm

Using mirror formula,

v1+u1=f1

v1+−301=81

v1−301=81

v1=81+301

v1=603+2

v1=605=121

v=+12cm

Therefore, the image will be formed at a distance of 12cm behind the mirror.

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