Optical Instruments

Applying the Telescope Magnification Formula:
- In a refracting telescope in normal adjustment, the total length of the telescope is given by: where, = focal length of the objective lens, = focal length of the eyepiece lens, m = total length of the telescope.
- The magnifying power of the telescope is given by: - Given , we get: - Substituting this into the equation : Thus, the focal length of the objective lens is 95 cm, and the focal length of the eyepiece lens is 5 cm.