State Rayleight.s criterion for two close lying points on an object when they are: just resolved.

State Rayleight.s criterion for two close lying points on an object when they are: unresolved

An azeotropic solution of two liquids has boiling point lower than either of them when it

The semi vertical angle subtended by two points of an object at the objective of a microscope is 30^@ . The object is illuminated using light of wavelength 589.3 nm. Calculate the minimum distance between the two points if these are just resolved. If a medium of R.I 1.48 is used between the object and the objective, then calculate the new limit of resolution. Comment on the improvement in the limit of resolution.

Two luminous point sources separated by a certain distance are at 10 km from an observer. If aperture of his eye is 2.5 xx 10^-3 m and wavelength of light used is 500 nmm, the distance of separation between point sources are just seen to resolved is

Two luminous point sources seperated by a certain distance are at 10 km from an observer. If the aperture of his eyes is 2.5xx10^(-3)m and the wavelength of light used is 500 nm, the distance of seperation between the point sources just seen to be resolved is