Two convex lenses of focal length 20 cm and 1 cm constitute a telescope The telescope is focused on - Physics - Ray Optics And Optical Instruments

Question

Two convex lenses of focal length 20 cm and 1 cm constitute a
telescope
The telescope is focused on a point which is 1 m away from the
objective Calculate the magnification produced and the length of
the tube if the final image is formed at a distance 25 cm from the
eyepiece

Meethi · Accepted Answer

They have considered vo and uo instead of L and fo but in ncert
also the final formula with assumptions has L and fo
<img src=
"https://s3mn%20mnimgs%20com/img/shared/content_ck_images/ana_qa_image_58abfe6f56fd5%20jpeg">

Two convex lenses of focal length 20 cm and 1 cm constitute a telescope. The telescope is focused on a point which is 1 m away from the objective. Calculate the magnification produced and the length of the tube if the final image is formed at a distance 25 cm from the eyepiece.

Two convex lenses of focal length 20 cm and 1 cm constitute a telescope.
The telescope is focused on a point which is 1 m away from the objective. Calculate the magnification produced and the length of the tube if the final image is formed at a distance 25 cm from the eyepiece.