Resolving Power of Optical Instruments

Lens Resolution depends on the distance between two distinguishable radiating points.This standard for separation is also known as the Rayleigh criterion. In symbols, the distance is $r=\frac{1.22 \lambda f}{2a}$, where f is the focal length of the lens and 2a is the diameter of the circular aperture .

List the types of resolutions in an optical instrument.

The limit of resolution of an instrument is inversely related to it's _____.

Resolution power of electron microscope is

Resolving power of a microscope depends upon

Assume that the light of wavelength is $6000 \stackrel{\circ }{\mathrm{A}}$ coming from a star. What is the resolution limit of a telescope whose objective has a diameter of $100$ inch?

The numerical aperture of a microscope is _____ proportional to the refractive index.

Resolving power of a microscope depends upon

The resolving power increases with area of the lens

Resolving power of a lens is the consequence of

The resolving power of the human eye is aprroximately-

An astronomical telescope is able to resolve two stars at an angular separation of ${10}^{–3} \mathrm{degree}$ . If wavelength of light used is $500\mathrm{nm}$,then the diameter of the objective of the telescope is

If the red light is replaced by blue light illuminating the object in a microscope, the resolving power of the microscope

The human eye has an approximate angular resolution of $\varphi =5.8\times {10}^{-4}$ rad and typical photoprinter prints a minimum of $300$ dpi (dots per inch, $1$ inch $=2.54 \mathrm{c}\mathrm{m}$ ). At what minimal distance (in centimetres) $z$ should a printed page be held so that one does not see the individual dots?

(The answer should contain only magnitude of distance)

An astronaut is looking down on earth's surface from a space shuttle at an altitude of $400 \mathrm{km}$. Assuming that the astronaut's pupil diameter is $5 \mathrm{mm}$ and the wavelength of visible light is $500 \mathrm{nm}$, the astronaut will be able to resolve linear objects of the size of about

On what factors the resolving power of microscope depends? How can it be increased?

What is meant by limit of angular resolution and the resolving power of telescope?

Define resolving power of microscope. How it is affected? 

$\left(\mathrm{i}\right)$ When wavelength of incident radiations is reduced.

$\left(\mathrm{ii}\right)$ When diameter of objective lens is reduced. Give reason for your answer.

Out of the following, resolving power of reflecting telescope depends on: 
 

An astronaut is looking down on earths' surface from a space shuttle at an altitude of $\text{400 km}$. Assuming that the astronaut's pupil diameter is $\text{5 mm}$ and the wavelength of visible light is $\text{500 nm}$, the astronaut will be able to resolve linear objects of the size of about: