A astronomical telescope has objective and eyepiece of focal lengths $40\text{cm}$ and $4\text{cm}$ respectively. To view an object $200\text{cm}$ away from the objective, the lenses must be separated by a distance

Q. A astronomical telescope has objective and eyepiece of focal lengths $40cm$ and $4cm$ respectively. To view an object $200cm$ away from the objective, the lenses must be separated by a distance:

Q. An astronomical telescope has objective eyepiece of focal lengths 40 cm and 4 cm respectively. To view an object 200 cm away from the objective lens, the lenses must be separated by a distance,

Q. An astronomical telescope has the objective lens and the eyepiece of focal lengths $80\text{cm}$ and $5\text{cm}$ respectively. Find its magnifying power, if the final image is formed at a distance of $50\text{cm}$ from the eyepiece.

Q. A terrestrial telescope has an objective lens and eyepiece of focal length $200\text{cm}$ and $4\text{cm}$ respectively. Separation between the objective lens and the eyepiece is $220\text{cm}$. The power of the erecting lens is $n^2\text{D}$. The value of $n$(integer only)

Q. The focal lengths of the objective and the eyepiece of an astronomical telescope are 20 cm and 5 cm respectively. If the final image is formed at a distance of 30 cm from the eyepiece, find the separation between the lenses required for distinct vision