CTET 2 Math and Science Sep 2016 Paper

Question : 79 of 150

Marks: +1, -0

Ritu is standing in front of a plane mirror. The distance between Ritu and her image is 10 m. If she moves 2 m towards the mirror, then the distance between Ritu and her image is :

6 m
8 m
10 m
12 m

Validate

Solution:

The image formed in a plane mirror is as behind the mirror as the object is in front of it.
Distance between object to the mirror

=5m

As she moves 2 m towards the mirror. So, distancebetween Ritu and image is

u+v

⇒3m+3m=6m

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