In YDSE, if white light is used, which color fringe will be closest to the central bright fringe?

In Young's double-slit experiment, using white light, which color fringe will be closest to the central bright fringe?

A researcher observes 7 fringes in a particular section of a screen during a Young's double slit experiment using light of wavelength 700 nm. If the same setup is used with light of wavelength 500 nm, how many fringes would be observed in the same section of the screen?

In Young’s double slit interference experiment, the slit separation is made 3 fold. The fringe width becomes

In Young’s double slit experiment, the distance between the two slits is $0.1\;mm$ and the wavelength of light used is $4 imes {10^{ - 7}}\;m$. If the width of the fringe on the screen is $4\;mm$, the distance between screen and slit is

In Young’s double slit experiment the separation d between the slits is ${\rm{2}}\,\,{\rm{mm}}$, the wavelength ${\rm{\lambda }}$ of the light used is ${\rm{5896}}{\mkern 1mu} {\mkern 1mu} \,{{\rm{A}}^ \circ }$ and distance ${\rm{D}}$ between the screen and slits is ${\rm{100}}\,\,{\rm{cm}}$. It is found that the angular width of the fringe is ${0.20^ \circ }$. To increase the fringe angular width to ${0.21^ \circ }$ (with same $\lambda$ and D) the separation between he slits to be changed to

In an interference pattern the position of zeroth order maxima is $4.8\;{\rm{mm}}$ from a certain point ${\rm{P}}$ on the screen. The fringe width is $0.2\;{\rm{mm}}$. The position of second maxima from point ${\rm{P}}$ is

In a Young’s double slit experiment, the fringe width is found to be $0.4\;mm$. If the whole apparatus is immersed in water of refractive index 4/3 without disturbing the geometrical arrangement, the new fringe width will be

In a Young's double slit experiment, the separation between the slits is $7\lambda$, where $\lambda$ is the wavelength of the light used. The maximum intensity is $I_0$. A screen is placed far away. What is the intensity of light at a point on the screen directly opposite one of the slits?

In YDSE, what happens to the fringe width if the distance between the slits and the screen is increased?

Two slits are separated by a distance of $0.5\;mm$ and illuminated with light of $\lambda = 6000\mathop {\rm A}\limits^ \circ$. If the screen is placed $2.5\;m$ from the slits. The distance of the third bright fringe from the centre will be