question_answer

A small object is placed 10 cm in front of a plane mirror. If you stand behind the object 30 cm from the mirror and look at its image, the distance recused for your eye will be:

A)  60 cm                                  

B)  20 cm

C)  40 cm                                  

D)  80 cm

Correct Answer: C

Solution :

 From the figure, the distance between the observer and the image is