Ray optics |part2|board|neet and jee|

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:

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.

For what distance is ray optics a good approximation when the aperture is 2 mm wide and wavelength is 600 nm ?

For what distance is ray optics a good approximation when the aperture is 2 mm wide and wavelength is 600 nm ?

Assertion: Standard optical diffraction cannot be used for discrimination between different X-ray wavelengths. Reason: The grating spacing is not of the order of X-ray wavelengths.

For what distance is ray optics a good approximation when the aperture is 4 mm wide and the wavelength is 500 nm?

For what distance is ray optics a good approximation when the aperture is 3 mm wide and the wavelength is 500 nm ?

In geometrical optics a ray of light is defined as

Ray optics is valid, when characteristic dimensions are

Estimate the distance for which ray optics is good approximately for an aperture of 2mm and wavelength 500 nm.