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

If final image is formed at infinity, then the distance between the two lenses of telescope is equal to length of tube = ${\mathrm{f}}_{\mathrm{e}}+{\mathrm{f}}_{\mathrm{o}}=0.3+0.05=0.35\mathrm{cm}$