u=30cm, f= 15cm, ho=4cm
1/v=1/f-1/u
= 1/15 – 1/30 =1/30
v=30cm
Also, m=v/u =hi/ho
Thus, hi=(30cm x 4cm)/30cm =4cm.
Thus the image formed is real and same size as the object.
Moraa orina answered the question on April 8, 2018 at 07:58
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