A pin hole camera of which 1 m is focussed to an object at a distance 30 m from it. If the height of the object is 3 m, what is the height of the image? ltbgt ltimg src="https://d10lpgp6xz60nq.cloudfront.net/physics_images/PS_PHY_VII_C04_E04_012_Q01.png" width="80%"gt
