A converging lens of focal length 10cm forms an erect image three times the size of the real object. Calculate the distance between the image and the object.
-
A.
6.6cm -
B.
11.1cm -
C.
13.3cm -
D.
20.0cm
Correct Answer: Option C
Explanation
Given, image size = 3U
object size = U
focal length = 10cm
lens to object distance = (frac{focal length times object size}{image size})
= (frac{10 times u}{3u} = 3.33)
distance between image and object = 10 + 3.33 = 13.33cm