Question

8.
(i) Two lenses of power 4 D and - 6 D are placed
in contact to form a composite lens. An object
is placed at a distance 50 cm from this
combination of lens, find the position of the
image.
[3]​

Answer 1

Answer:

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Answer 2

v = -25cm as,

P1 + P2 = -2D

P (total) =1/f

-2D=1/f

f= -50cm

1/v-1/u=1/f

1/v =(u+f)/fv

1/v= -2/50

v=-25cm...

here's your answer