Question

F = -25m ,u = -50m find v and m

Answer 1

Explanation:

From the lens formula 1/F=1/v-1/u

so from the given values

-1/25=1/v-(-1/50)

-1/25=1/v+1/50

1/v=1/25+1/50

do LCM and find the value of v

magnification m=v/u

substitute the values of v and u in the above formula..