Question

focal length of concave mirror is lo.com An object is placed in front of its in such a way so that image is formed on screen and it is tuíce the size of object. Find object distance and image distance.​

Answer 1

Explanation:

f= - 10cm (as f for concave lens is negative as per sign convention)

m=2

m= f/f-u

hence 2= 10/10-u

u = - 5cm

now m=f-v/f

2= 10-v/ 10

v = - 10 cm

u is negative as per sign convention.

formula for m is derived as given in attachment.

hope it helps!!!!!