Wave Optics

In a YDSE, the light of wavelength $\lambda=5000 Ã$ is used, which emerges in phase from two slits a distance $\mathrm{d}=3 \times 10^{-7} \mathrm{~m}$ apart. Atransparent sheet of thickness $\mathrm{t}=1.5 \times…

The aperture diameter of a telescope is $5m$ . The separation between the moon and the earth is $4\times\,10^{5}km$ . With light of wavelength of $5500\AA$ , the minimum separation between objects on the surface of…

Using monochromatic light of wavelength $\lambda\,$,an experimentalist sets up the Young's double slit experiment in three ways as shown. If she observes that $y=\beta\,^{'}$,the wavelength of light used is :

Given below are two statements : Statement I : If the Brewster's angle for the light propagating from air to glass is $\theta\,_{B}$, then Brewster's angle for the light propagating from glass to air is…

The box of a pin hole camera, of length L, has a hole of radius a. It is assumed that when the hole is illuminated by a parallel beam of light of wavelength $\lambda\,$ the spread of the spot (obtained on the opposite…

An unpolarised light beam of intensity $2I_{0}$ is passed through a polaroid $P$ and then through another polaroid $Q$ which is oriented in such a way that its passing axis makes an angle of $30^{\circ}$ relative to…

Two coherent sources of sound, $S_{1}$ and $S_{2},$ produce sound waves of the same wavelength $\lambda\,=1m$arein phase. $S_{1}$and $S_{2}$are placed $1.5m$ apart (see fig). A listener, located at $L$, directly in…

Unpolarized light of intensity $I$ passes through an ideal polariser $A$. Another identical polariser $B$ is placed behind $A$. The intensity of light beyond B is found to be $\frac{I}{2}$. Now another identical…

Monochromatic light of wavelength $500 \mathrm{~nm}$ is used in Young's double slit experiment. An interference pattern is obtained on a screen. When one of the slits is covered with a very thin glass plate (refractive…

Two satellites revolve around a planet in coplanar circular orbits in anticlockwise direction. Their period of revolutions are $1$hour and $8$ hours respectively. The radius of the orbit of nearer satellite is…

In a Young's double slit experiment, the slits are separated by $0.3\mathrm{mm}$ and the screen is $1.5m$ away from the plane of slits. Distance between fourth bright fringes on both sides of central bright fringe is…

Two wavelengths $\lambda_1$ and $\lambda_2$ are used in Young's double slit experiment. $\lambda_1=450 \mathrm{~nm}$ and $\lambda_2=650 \mathrm{~nm}$. The minimum order of fringe produced by $\lambda_2$ which overlaps…