Question

A convex mirror is present 5m away from a tree of height 2m.if the focal length of the mirror is 1.5m.calculate the position and size of the image​

Answer 1

Answer:

6/13 m

Step-by-step explanation:

u = -5 m

f = 1.5 m (+ve due to convex mirror)

Applying mirror formula,

1/f = 1/u + 1/v

1/1.5 = 1/-5 + 1/v

1/v = 2/3 + 1/5 = 13/15  => v = 15/13 m

Now, object height (Ho) = 2 m

Let Image Height (Hi) = x m

So, x/2 = magnification = -v/u (for mirrors)

So, x/2 = (-15/13)/(-5) = 3/13

x = 6/13 m