Given
f=8cm
u=-24cm
v=?
by the lens formula
1/f = 1/v - 1/u
or
1/v = 1/f+ 1/u=1/8-1/24 = 1/12
v=12 cm
magnitude of magnificaation m = (v/u)=12/24 =0.5
magnification is smaller than 1, so the image is smallerthan the object
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