Question

The radius of curvature of a rear- view mirror in a car is 4m. If a truck is behind the car, located 5m from the rear-view mirror of the car.

Calculate the size of the image relative to the size of the truck and also find the position and nature of the image formed

Answer 1

$\frac{1}{v} + \frac{1}{u} = \frac{1}{f} \\ \\ \frac{1}{v} + \frac{1}{ - 5} = \frac{1}{2} \\ \\ v = \frac{10}{7} m \\ \\ magnification = \frac{ - v}{u} = \frac{hi}{ho} \\ \\ hi = \frac{8}{7}$

Answer 2

Answer:

\begin{gathered} \frac{1}{v} + \frac{1}{u} = \frac{1}{f} \\ \\ \frac{1}{v} + \frac{1}{ - 5} = \frac{1}{2} \\ \\ v = \frac{10}{7} m \\ \\ magnification = \frac{ - v}{u} = \frac{hi}{ho} \\ \\ hi = \frac{8}{7} \end{gathered}