Two convex lenses of focal lengths `0.3m` and `0.05m` are used to make a telescope. The distance kept between the two is

You are given two convex lenses of focal lengths 10 cm and 60 cm. To make a telescope, which of the two lenses will you use as object lens and which one as eye lens ?

Two lenses of focal lengths 5 cm and 50 cm are to be used for making a telescope.Which will you use for the objective?

A compound microscope consists of two convex lenses of focal lengths 0.02 m and 0.15 m. An object is placed at a distance of 0.025 m from the object glass and the final image is formed at the least distance of distinct vision. Find the magnification produced and the distance between the lenses.

Two convex lenses of focal length f_1 and f_2 are mounted coaxially separated by a distance. If the power of the combination is zero, the distance between the lenses is

Two convex lenses of focal length f_1 and f_2 are mounted coaxially separated by a distance. If the power of the combination is zero, the distance between the lenses is

Two convex lenses of focal length 0.01 , and 0.06 m, respectively are arranged to from a microscope. A small object is placed 0.012 m from object glass. If the image seen appears to be 0.25 m from the eye-piece, what is the distance between the object glass and eye-piece?

Two lenses of focal lengths 6cm and 50 cm are used in construction of a telescope. Which lens will be used as an objective and why?

How would you combine two lenses of focal lengths 25 cm and 2.5 cm to make a telescope ? What is the magnifying power of this telescope ?