Question 213: 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 x1 and x2
(x1 > x2) from the lens. The ratio of x1 and x2
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 x1 and x2 (x1 > x2) from the lens. The ratio of x1 and x2 is :-

Choose the correct answer: