A small telescope has an objective lens of focal length 144 cm and an eyepiece of focal length 6.0 cm. What is the magnifying power of the telescope? What is the separation between the objective and the eyepiece?
Focal length of objective lens is fo=140cm Focal length of an eyepiece is fe=5cm At normal adjustment, the separation between the objective lens and the eyepiece is fe+fo=145cm
