question_answer

An object is located in a fixed position in front of a screen. Sharp image is obtained on the screen for two positions of a thin lens separated by 10 cm. The size of the images in two situations are in the ratio 3 : 3. What is the distance between the screen and the object?

A) 124.5 cm 

B) 144.5 cm

C) 65.0 cm

D) 99.0 cm