Question

the object 5cm high is placed infront of a plane mirror .what is the size of the mirror?​

Answer 1

Answer:

We should know the distance it the mirror type --

Convex or Concave.

Fact related - In the front of a mirror the reflection is made three times larger than the object .

Answer 2

Answer:

2.5cm

Explanation:

We know that,

height of mirror = 1/2 height of object

height of mirror=1/2 * 5=2.5

So, the answer will be 2.5 cm

Hope it helps you!!!