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

Answer:

The correct answer will be "2 m".

Explanation:

As we know,

⇒  $\frac{Mirror's \ size}{Body's \ height} =\frac{1}{2}$

Now,

⇒  $Size \ of \ a \ mirror = \frac{n}{2}$

Then,

⇒  $Size \ of \ mirror = \frac{4}{2}$

⇒                            $=2 \ meter$