Focal length of objective eyepiece and inverting lens of terrestrial telescope for 20 CM 10 cm and 5 cm respectively. Length of tube containing these lenses at normal adjustment is (1)30cm (2)35cm (3)50cm (4)40cm
IIT JEE and NEET Physics: Working of a Galilean Telescope
Lens Erecting System Stock Vector (Royalty Free) 1374416621 | Shutterstock
9.5 Telescopes | Texas Gateway
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