Question

Focal length of concave mirror is 30 centimetre if an object is placed at 40 cm then find position of image and also get the magnification

Answer 1

Answer: explanation:

We have f= -30 and u= -40 then position of the image... 1/f = 1/ v+1/ u . We put the value of u& f we get -1/30=1/v-1/40 this is equal to 1/v= -1/12 ...this gives v= -12 cm ans..

Answer 2

Explanation:

this is the answer for this question