3 An astronomical telescope of magnifying power is made

Last updated: 6/28/2023

3 An astronomical telescope of magnifying power is made using two lenses spaced 45 cm apart Th focal length of the lenses used are 1 f 40 cm f 5 cm 2 f 8 cm f 5 cm 3 f 5 cm f 47 cm 4 f 20 cm f5 cm