Question

draw a labelled ray diagram to locate the image of an object formed by convex lens of focal length 20 cm when the object is placed 30 cm away from the lens

Answer 1

Explanation :

Focal length of the convex lens, f = 20 cm

Object distance, u = -30 cm

The lens formula is given by :

$\dfrac{1}{v}-\dfrac{1}{u}=\dfrac{1}{f}$

$\dfrac{1}{v}=\dfrac{1}{f}+\dfrac{1}{u}$

$\dfrac{1}{v}=\dfrac{1}{60\ cm}$

So, $v=60\ cm$

The whole description is shown in the attached figure.

Hence, this is the required solution.

Answer 2

they medicine of deformed by convex lens is a phone call length 20 centimeters in the objective plays that isn't DeRidder ever..

Object formed by convex lenses of focal length 20 CM when object is placed 30cm away from lens

It is 60 cm.......