Question 160: Ray Optics

Question

A convex lens of focal length 20 cm produces
images of the same magnification 2 when an
object is kept at two distances x
1
and x
2
(x
1
> x
2
) from the lens. The ratio of x
1
and x
2
is :-

Accepted Answer

Magnification is 2
If image is real, $${x_1} = {{3f} \over 2}$$
If image is virtual, $${x_2} = {f \over 2}$$
$${{{x_1}} \over {{x_2}}} = 3:1$$

Answer

3 : 1

Answer

2 : 1

Answer

5 : 3

Answer

4 : 3

Ray Optics

A convex lens of focal length 20 cm produces images of the same magnification 2 when an object is kept at two distances x 1 and x 2 (x 1 > x 2 ) from the lens. The ratio of x 1 and x 2 is :-

Choose the correct answer: