Question

Q.8 A lens of power +2D and lens of power -1D are placed in close contact with
each other. The combination will behave like
(i) A convergent lens of focal length 50 cm (ii)A convergent lens of focal length 100 cm
(iii)A convergent lens of focal length 150 cm (iv) A divergent lens of focal length 100 cm​

Answer 1

Answer:

Given p=

f

1

, ⟹f=

p

1

p=2D ∴f=

2

1

m=50cm

Explanation:

Hence option A is the correct one.....

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Answer 2

Answer:

plzz see answer in above photo