Question 178: Ray Optics

Question

Find the distance of the image from object O, formed by the combination of lenses in the figure :

Accepted Answer

$${1 \over {{V_1}}} + {1 \over {30}} = {1 \over {10}}$$
$${1 \over {{V_1}}} = {2 \over {30}} \Rightarrow {V_1} = 15$$ cm
$${1 \over {{V_2}}} - {1 \over {10}} =  - {1 \over {10}}$$
$${1 \over {{V_2}}} = 0$$
V
2
= $$\infty$$
V
3
= 30 cm
OV
3
= 75 cm

Answer

75 cm

Answer

10 cm

Answer

20 cm

Answer

infinity

Ray Optics

Find the distance of the image from object O, formed by the combination of lenses in the figure :

Choose the correct answer: