Question

a convex lens has a focal length 10 cm an object 2 cm long is kept at a distance of 15 cm from the lens find the position size and magnification produced by the lens​

Answer 1

Answer:

f=10cm ho= 2cm u=-15cm v=? hi=? m=?

Explanation:

1/f=1/v-1/u

1/v=1/f+1/u

1/v=1/10+1/-15

=3-2/30

1/v=1/30

v=30cm.

m=v/u=hi/go

m=30/-15

m=-2

hi/ho=v/u

hi/2=-2

hi=-2×2

hi=-4cm.