The distance of an object from the principal focus of a concave mirror of focal length F is D. The ratio of the size of image to the size of object is
a) F/D
b) (F/D)2
c) (F/D)1/2
d) F+D/F-D
Dear Student ,
Here in this case the object distance , u = D and the focal length is f = F .
Now let us take that the image distance is v .
So applying the equation of spherical mirror we get ,
Regards
Here in this case the object distance , u = D and the focal length is f = F .
Now let us take that the image distance is v .
So applying the equation of spherical mirror we get ,
Regards