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

Question

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 (A) 0.35 m (B) 0.25 m (C) 0.175 m (D) 0.15 m

Tardigrade Admin · Accepted Answer

If final image is formed at infinity, then the distance between the two lenses of telescope is equal to length of tube =fe+fo=0.3+0.05=0.35 m

Q. 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

0.35 m

0.25 m

0.175 m

0.15 m

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

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