1. Tardigrade
  2. Question
  3. Physics
  4. An object is placed at 10 cm in front of a concave mirror of radius of curvature 15 cm. The magnification and nature of the image is

Question Error Report

Thank you for reporting, we will resolve it shortly

Back to Question

Q. An object is placed at 10 cm in front of a concave mirror of radius of curvature 15 cm. The magnification and nature of the image is

Ray Optics and Optical Instruments

Solution:

$f=\frac{R}{2}=\frac{-15}{2}=-7.5 cm$
and $u=-10 cm , \therefore \frac{1}{v}+\frac{1}{(-10)}=\frac{1}{-7.5}$
$\Rightarrow v=-30 cm$
The -ve value of $v,$ means image is real.
$m=-\frac{v}{u}=\frac{-(30)}{-10}=-3$
The image is inverted and magnified 3 times.