Question

A boy 1.5 cm tall stands 6.1 m from a concave mirror. If the image is formed on a screen 15 cm mirror, what is the size of the image?

Answer 1

Answer:

size of image = -3.69cm (negative sign since image is formed below the principal axis)

Explanation:

Given,

ho= +1.5cm

u = -6.1 cm

v= -15 cm (formed on the same side of mirror as object)

hi=?

We know

$hi/ho = - v/u$

$hi = - ho*v/u$

= -1.5 *  (-15/-6.1)

= -1.5 * 2.46

= -3.69 cm