Wave Optics Tes...

For distances much greater than Fresnel distance ZF

Estimate the distance for which ray optics is good approximation for an aperture of 4 mm and wavelength 400 nm.

The critical angle for total internal reflection at a liquid –air interface is 42.5^∘ If a ray of light traveling in air has an angle of incidence at the interface of 35^∘  what angle does the refracted ray in the liquid make with the normal?

According to Huygens construction relation between old and new wave fronts is

We say that a light wave is linearly polarized in y direction if

A parallel beam of light of wavelength 500 nm falls on a narrow slit and the resulting diffraction pattern is observed on a screen 1 m away. It is observed that the first minimum is at a distance of 2.5 mm from the centre of the screen. Find the width of the slit.

Relation between ray and wave front is

Two plane mirrors intersect at right angles. A laser beam strikes the first of them at a point 11.5 cm from their point of intersection, as shown in figure For what angle of incidence at the first mirror will this ray strike the midpoint of the second mirror (which is 28.0 cm long) after reflecting from the first mirror? 

Two sources of light are coherent if they have

If we have two coherent sources  S1andS2  vibrating in phase, then for an arbitrary point P constructive interference is observed whenever the path difference is