Question

The inhabitants of a planet in another galaxy have their eyes at the exact center 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

Answer 1

The correct answer will be "2 m".

Step-by-step explanation:

As we know,

⇒
`(Mirror's \ size)/(Body's \ height) =(1)/(2)`

Now,

⇒
`Size \ of \ a \ mirror = (n)/(2)`

Then,

⇒
`Size \ of \ mirror = (4)/(2)`

⇒
`=2 \ meter`