The Inhabitants of a Planet in Another Galaxy Have Their

Multiple Choice

The inhabitants of a planet in another galaxy have their eyes at the exact centre of their 4.0-m long bodies.How long must a plane mirror be for such a creature to be able to see all of its body in the mirror?

A) 1.0 m
B) 2.0 m
C) 2.5 m
D) 4.0 m
E) 8.0 m