Wave Optics Tes...

The ratio of slit widths in Young's double slit experiment is $$4:9$$. The ratio of maximum and minimum intensities will be

A narrow monochromatic beam of light of intensity $$I$$ is incidents on a glass plate as shown, in the figure. Another identical glass plate is kept close to the first-one and parallel to it. Each glass plate reflects $$25{\%}$$ of the light incident on it and transmits the remaining. Then, the ratio of the maximum and minimum intensities in the interference pattern formed by the two beams obtained after one reflection at each plate is

Two nearby objects are just resolved, if the principle maximum in the diffraction pattern of one coincides with

An un-publicized beam of intensity $$2a^2$$ passes through a thin Polaroid. Assuming zero absorption in the Polaroid the intensity of emergent planes polarized light is   

White light is normally incidents on a soap film. The thickness of the film is $$0.5\mu m$$ and its refractive index is $$1.33$$. Which wave length will be reflected maximum in the visible region?

Light of wavelength $$5880A^o$$ is incidents on a thin glass plate $$(\mu=1.5)$$ such that the angle of refraction in the plate is $$60^0$$. The minimum thickness of the plate, so that it appears dark in the reflected light will be

The shift of the interference pattern on the screen when the slit is displayed by $$Sl=1mm$$ along the arc of radius $$r$$ with centre at $$0$$.

Two identical lights sources $$S_1$$ and $$S_2$$ emit the light of same wavelength $$\lambda$$. These light rays will exhibit interference if 

At what maximum width $$\delta_{max}$$, of the slit are the interference fringes on the screen observed still sharp?

In a YDSE with identical slits, the intensity of the central bright fringe is $${I}_{0}$$.If one of the slits is covered, the intensity at the same point is