Ray Optics and Optical instrument

A : Spy satilight cameras use lenses with very large aperatures. R : In general, larger the aperture in an optical instrument, the greater the resolution.

Microscope is an optical instrument which

A: Ray optics assumes that light travels in a straight line which is disapproved by diffraction effects, yet the ray optics assumption is so commonly used in understanding location and several other properties of images in optical instruments. R: Typical sizes of apertures involved in ordinary optical instruments are much larger than the wavelength of light.

Four rays of light above the optic axis (parallel to it) and their path after striking an optical system are shown in column-I . Match the corresponding optical instrument from column-II:

Four indicident rays of light parallel to optic axis and their path after passing through an optical system are shown in table-1. match the corresponding optical instrument from table 2.

How does diffraction limit the resolving power of an optical instrument?

Regarding the power of an optical instruments match the following two cloumns.

Find the net deviation produced in the incident ray for the optical instrument shown in figure. (Take refractive index of the prism material as 2.)

An optical instrument uses eye-lens of power 16 D and objective lens of power 50D and has a tube length of 16.25 cm. Name the optical instrument and calculate its magnifying power if forms the final image at infinity.

An optical instrument uses a 25 D objective and 20 D eyepeice with a tube length of 25 cm when eye is least strained