A boy with a mouth 3 cm wide stands 4 m away from a plane mirror. Where is his image and how wide is the image of his mouth?
1
8 m away from him and mouth image is 3 cm wide.
2
6 m behind the mirror and mouth image is 6 cm wide
3
4 m away from him and mouth image is 3 cm wide.
4
8 m behind the mirror and mouth image is 6 cm wide