Tag: space research and satellites
Questions Related to space research and satellites
The diameter of the moon is $3.5\times 10^{3} km$ and its distance from the earth is $3.8\times 10^{5} km$. The diameter of the image of the moon seen by a telescope having focal length of the objective and eye-piece as $400\ cm$ and $10\ cm$ respectively will be
The magnification produced by an Astronomical telescope in normal
A telescope has a objective of focal length $60\, cm$ and an eye-piece of focal length $5\, cm$. The least distance of distinct vision is $25\, cm$. The telescope is focussed for distinct vision on a scale of $300\, cm$ away. The separation between the objective and the eye-piece is
The length of an astronomical telescope for normal vision (relaxed eye) will be:
The focal length of the objective of a terrestrial telescope is $80cm$ and it is adjusted for parallel rays, then its power is $20$. If the focal length of erecting lens is $20cm$, then full length of the telescope will be
An astronomical refractive telescope has an objective of focal length 20 m and an eyepiece of focal length 2 cm. then