Question

24. An object of height 4 cm is placed perpendicular to the principal axis of a concave
lens of local length 10 cm. If object is kept at a distance 20 cm from optical centre,
then find the size of image.
1​

Answer 1

Answer:

Image manification

m= v/u=height of image/height of object

v-image distance

u-object distance

substitute using proper sign

negative sign for distance measured to left of lens

do it yourself only then will you improve

Answer 2

Answer:

for answer check out the above attachment