The smallest object detail that can be resolved with a microscope using light of wavelength `600 nm` is `3.5 xx 10^(-5) cm`. Find N.A of objective when used dry and when immersed in an oil of `mu = 1.6`.

Calculate the resolving power of a telescope when light of wavelength 540 nm is used. Diameter of objective lens is 6 cm .

What is the minimum distance between two objects which can be resolved by a microscope having the visual angle of 30^@ when light of wavelength 500 nm is used ?

Limit of resolution of a telescope is 4.88 xx 10^-6 rad for light of wavelength 560 nm. Diameter of objective is

The vertical angle subtended by two points on a glass block at the objective of a microscope is 20^@ .Calculate the minimum distance between the points if they are just resolved when illuminated by light of wavelength 600 nm. What is the increase in resolving power of the instrument if the objective is immersed in oil of refractive index 1.5?

Two points separated by a distance of 0.1mm can just be resolved in a microscope when a light of wavelength 6000Å is used. If the light of wavelength 4800Å is used this limit of resolution becomes

Two points separated by a distance of 0.1mm can just be resolved in a microscope when a light of wavelength 6000Å is used. If the light of wavelength 4800Å is used this limit of resolution becomes

The numerical aperture of objective of a microscope is 1*12 . The limit of resolution, when light of wavalength 6000 Å is used to view an object is :