Question

Please answer me!! ​

Answer 1

u=15/4

= 3.75

mark as brainliest please

Answer 2

Answer:

u = 7.5 cm

Step-by-step explanation:

Given that,

image distance (v) = 15cm

focal length (f) = 5cm

object distance (u) =?

as we know that, mirror formula is

$1/f =1/v +1/u$

Substituting the values in this formula,

$1/5 = 1/15 + 1/u$

⇒$1/5-1/15=1/u$

By taking LCM we get,

⇒$\frac{3-1}{15}$$=1/u$

⇒$2/15$ $= 1/u$

⇒$u = 15/2$

⇒$u = 7.5$

∴ object distance (u) = 7.5 cm

HOPE THIS WOULD BE HELPFUL FOR YOU