In Young’s double slit experiment,a minimum is obtained when the phase difference of superimposing waves is:

In Young's double-slit experiment,the maximum intensity is $I_0$. If one slit is closed,the new maximum intensity is:

In Young's double slit experiment, two slits $S_1$ and $S_2$ are $d$ distance apart and the separation from slits to screen is $D$. If two transparent slabs of equal thickness $t = 0.1 \text{ mm}$ but refractive indices $\mu_1 = 1.51$ and $\mu_2 = 1.55$ are introduced in the path of the beam $(\lambda = 4000 \text{ Å})$ from $S_1$ and $S_2$ respectively, the central bright fringe will shift by how many fringes?

In a double slit interference experiment, the fringe width obtained with a light of wavelength $5900 \text{ Å}$ was $1.2 \text{ mm}$ for parallel narrow slits placed $2 \text{ mm}$ apart. In this arrangement, if the slit separation is increased by one-and-half times the previous value, then the fringe width is (in $ \text{ mm}$)

Two sources of light of wavelengths $2500 \text{ Å}$ and $3500 \text{ Å}$ are used in Young's double slit experiment simultaneously. Which orders of fringes of the two wavelength patterns coincide?

In a Young's double slit experiment,two slits are separated by $2 \, mm$ and the screen is placed $1 \, m$ away. When light of wavelength $500 \, nm$ is used,the fringe separation will be ........ $mm$.