answer dis qn.?

Question

An object is placed 24cm from concave mirror. its image is inverted & double the size of the object . find the focal lenght of the mirror & the poisition where the image is formed.

Answer 1

Magnification m= q/p
p- distance to the object
q – imaginary distance to image

Focal length = 16cm
Image formed at 48cm

q=mp=24 (2) =48 cm

1/f=1/q+1/p

f = pq/(q+p)=(24)(48)/(48 + 24)=
=1152/72=16 cm

That should do it.