Two lenses of focal lengths - 100 cm and - 5 cm are used to prepare an astronomical telescope- The minimum tube length will be - -final image is infty-95 cm100 cm105 cm500 cm

Question

Toppr Admin · Accepted Answer

Answer is C-

Two lenses of focal lengths $+ 100 c m$ and $+ 5 c m$ are used to prepare an astronomical telescope. The minimum tube length will be : (final image is at $\infty$ )
$95 c m$
$100 c m$
$105 c m$
$500 c m$

Answer is C.

Two lenses of focal lengths +100cm and +5cm are used to prepare an astronomical telescope. The minimum tube length will be : (final image is at ∞)95cm100cm105cm500cm

Answer is C.

Two lenses of focal lengths $+ 100 c m$ and $+ 5 c m$ are used to prepare an astronomical telescope. The minimum tube length will be : (final image is at $\infty$ )
$95 c m$
$100 c m$
$105 c m$
$500 c m$