Question

find the distance of the image formed when an object plased at 10cm form the convex lens whose focal length is 4cm​

Answer 1

Answer:

As the Focal length of the convex lens is real that is on the right side of the mirror

So we get that focal length is positive

so u=-10cm

f=4cm

v=?

By applying mirror's formula

1/v-1/u=1/f

we get 1/v=1/f+1/u

1/v=1/4-1/10

....+0.15 CM...

So the image will be formed 0.15 CM in front of mirror.

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