Question

an object of 4cm height is placed at 60cm in front of concave mirror of focal length 20cm find the image distance and height of the image​

Answer 1

Answer:

Image distance is 30 cm and height of image is 2cm

Explanation:

Using ray optics concept and mirror formula...

We are given with f = focal length = -20cm,Object distance = u = -60cm.Using 1/v + 1/u = 1/f.......(1)

Here v is image distance from the mirror.

Substituting the values we get v = -30cm.

Negative sign implies that image formed is real and infront of the mirror.

Now using magnification m = -v/u = height of image/height of object.Substituting the vale we get height of image as -2 cm.

Here again negative sign implies that image formed is below the optical axis. Thankyou and follow me on brainly!!!!!!!!