Interference of Light Waves and Young's Experiment

How the angular separation of interference fringes in Young’s double slit experiment would change when the distance between the slits and screen is doubled?

How the angular separation of interference fringes in Young’s double slit experiment would change when the distance between the slits and screen is doubled?

In Young’s double-slit experiment, monochromic light of wavelength $630 \mathrm{nm}$ illuminates the pair of slits and produces an interference pattern in which two consecutive bright fringes are separated by $8.1 \mathrm{mm}$. Another source of monochromic light produces the interference pattern in which the two consecutive bright fringes are separated by $7.2 \mathrm{mm}$. Find the wavelength of light from the second source.

How the angular separation of interference fringes in Young’s double slit experiment would change when the distance between the slits and screen is halved:

In a Young’s double slit experiment, the two slits are kept $2 \mathrm{mm}$ apart and the screen is positioned $140 \mathrm{cm}$ away from the plane of the slits. The slits are illuminated with light of wavelength $600 \mathrm{nm}$.

(i) Find the distance of the third bright fringe from the central maximum in the interference pattern obtained on the screen.

(ii) If the wavelength of the incident light were changed to $480 \mathrm{nm}$, find out the shift in the position of third bright fringe from the central maximum.

A parallel beam of monochromatic light falls normally on a single narrow slit. How does the angular width of the principal maximum in the resulting diffraction pattern varies with the width of the slit?

How the fringe pattern changes when the screen is moved away from the slits:

The way the fringe pattern changes when the screen is moved away from the slits is 

Which of the following expressions is/are correct for Young’s experiment?

(i) condition for bright fringes  $x=n\lambda \frac{D}{d}$

(ii) condition for dark fringes  $x=\left(2n-1\right)\frac{\lambda }{2}\frac{D}{d}$

ii) fringe width  $\beta =\frac{\lambda D}{d}$

A point source emits sound equally in all directions in a non-absorbing medium. Two points P and Q are at a distance of 9 metres and 25 metres respectively from the source. The ratio of amplitudes of the waves at P and Q is ___________

A point source emits sound equally in all directions in a non-absorbing medium. Two points P and Q are at a distance of 9 metres and 25 metres respectively from the source. The ratio of amplitudes of the waves at P and Q is ___________

In a Young’s double slit experiment, $12$ fringes are observed to be formed in a certain segment of the screen when the light of wavelength $600 \mathrm{nm}$ is used. If the wavelength of light is changed to $400 \mathrm{nm}$, number of fringes observed in the same segment of the screen is given by

Two beams of light having intensities I and 4I interfere to produce a fringe pattern on a screen. The phase difference between the beams is  $\frac{\pi }{2}$  at point A and  $\pi$ at point B. Then the difference between the resultant intensities at A and B is

In Young’s double-slit experiment, the two slits act as coherent sources of equal amplitude 'A' and of wavelength $\lambda$. In another experiment with the same set-up the two slits are sources of equal amplitude 'A' and wavelength $\lambda$ . but are incoherent. The ratio of the intensity of light at the midpoint of the screen in the first case to that in the second case is ______

In Young’s double-slit experiment, the two slits act as coherent sources of equal amplitude 'A' and of wavelength $\lambda$. In another experiment with the same set-up the two slits are sources of equal amplitude 'A' and wavelength $\lambda$ . but are incoherent. The ratio of the intensity of light at the midpoint of the screen in the first case to that in the second case is ______

A thin slice is cut out of a glass cylinder along a plane parallel to its axis. The slice is placed on a flat glass plate as shown in figure. The observed interference fringes from this combination shall be

Two coherent monochromatic light beams of intensities $\mathrm{I}$ and $\mathrm{4I}$ are superposed. The maximum and minimum possible intensities in the resulting beam are

Two coherent monochromatic light beams of intensities $I$ and $4I$ are superposed. The maximum and minimum possible intensities in the resulting beam are

In Young’s double-slit experiment, the separation between the slits is halved and the distance between the slits and the screen is doubled. The fringe width will

In Young's double slit experiment the distance between the slits and the screen is doubled. The separation between the slits is reduced to half. As a result, the fringe width