Thin Films Interference

Blue light of wavelength $180 \mathrm{nm}$ is most strongly reflected from a thin film of oil on a glass slab when viewed near normal incidence. Assuming that the index of refraction of the oil is $1.2$ and that of the glass is $1.6$, what is the minimum thickness of the oil film (other than zero)? 

In the figure shown '$S$' is a monochromatic source of light emitting light of wavelength $\lambda$ (in air). Light falls on slit '${\mathrm{S}}_1$' from '$S$' and then reach the slits '${\mathrm{S}}_2$' and '${\mathrm{S}}_3$' 'through a medium of refractive index '${\mu }_1$'. Light from slits ${\mathrm{S}}_2$ and ${\mathrm{S}}_3$ reach the screen through medium of refractive index ${\mu }_3$. A thin transparent film of refractive index ${\mu }_2$ and thickness '$t$' is placed in front of '$S_2$'. Point '$P$' is symmetrical w.r.t. ${ \mathrm{S}}_2$ ' and '${\mathrm{S}}_3$' (Using the value $\mathrm{d}=1 \mathrm{mm},\mathrm{D}=1 \mathrm{m},{\mu }_1=4/3,{\mu }_2=3/2,{\mu }_3=9/5$ and $\mathrm{t}=\frac{4}{9}\times {10}^{-5} \mathrm{m}$ )

While Interference of Reflected Waves from Thin Film for Normal Incidence, the path difference is twice the thickness of film .

Explain destructive interference of refracted wave on thin film.

How does interference condition change for a point on a thin uniform film in reflected light?

Explain the interference of refracted waves due to normal incidence from thin film.

What do you understand by destructive refractive interference?

Explain constructive interference in refracted light waves?

How path difference occurs in refracted wave in thin film?

How does the interference pattern by reflection in thin films different from that by refraction?

Obtain the conditions for constructive and destructive interference in thin films in case of interference reflected light.

What is the interference of light waves in physics?

To find prominent diffraction , the size of diffraction object should be

Two waves are travelling and superimposed as a result of this constructive interference occur between waves, the two waves amplitude are:

Is there any difference between colour light obtained from a prism and colours of soap bubble?

When light is incident on a soap film of thickness $5\times {10}^{-5} \mathrm{cm}$, the wavelength of light reflected maximum in the visible region is $5320 \stackrel{\circ }{\mathrm{A}}$. The refractive index of the film will be:

Obtain equation for constructive and destructive interference for transmitted and reflected waves in thin films.

Interference fringes were produced in Young's double slit experiment using light of wavelength $5000 \stackrel{\circ }{\mathrm{A}}$ When a film of thickness $2.5\times {10}^{-3} \mathrm{cm}$ was placed in front of one of the slits, the fringe pattern shifted by a distance equal to $20$ fringe-widths. The refractive index of the material of the film is

InYoung's double slit experiment, a mica sheet of thickness $t$ and refractive index $\mathrm{m}$ is introduced in the path of ray from the first source ${\mathrm{S}}_1$. By how much distance the fringe pattern will be displaced :

In $YDSE$, let $A$ and $B$ be two slits as shown. Thin films of thickness $t_{\mathit{A}}$ and $t_{\mathit{B}}$ and refractive indices ${\mu }_{\mathit{A}}$ and ${\mu }_{\mathit{B}}$ are placed in front of $A$ and $B$ respectively. If ${\mu }_{\mathit{A}}{t}_{\mathit{A}}={\mu }_{\mathit{B}}{t}_{\mathit{B}}\mathit{,}$ then the central maxima will