Question
67.Telescope has an objective lens of focal length 200 cm and an eye piece with focal length 2 centimetre if this telescope is used to see a 50 metre tall building at a distance of 2 km what is the height of the image of the building formed by the objective lens 1) 5 centimetre 2) 10 centimetres 3) 1 cm 4) 2 centimetre