Why is the aperture of objective lens of a telescope taken large ?
The aperture of the objective lens of a telescope is made large so as to
Why the aperture of objective lens of the microscope is small and that of telescope is large ?
The diameter of the objective lens of a telescope is 5.0m and wavelength of light is 6000 Å . The limit of resolution of this telescope will be
The focal length of the objective lens of a telescope is 30 cm and that of its eye lens is 3 cm. It is focussed on a scale 2 metres distant from it. The distance of the objective lens from the eye lens to see with relaxed eye is :-
The diameter of the objective of a telescope is a, its magnifying power is m and wavelength of light is lambda . The resolving power of the telescope is
The focal length of the objective lens of a telescope is 50 cm If the magnification of the telescope is 25, then the focal length of the eye-piece is
What is the distance between objective and eye lens of telescope in normal adjustment ?
