Two ideal slits `S_(1)` and `S_(2)` are at a distance `d` apart, and illuninated by light of wavelength `lambda` passing through an ideal source slit `S` placed on the line through `S_(2)` as shown. The distance between the planes of slits and the source slit is `D.A` screen is held at a distance `D` from the plane of the slits. The minimum value of `d` for which there is darkness at `O` is `(dlt lt D)`

In a double slit experiment, the distance between the slits is d. The screen is at a distance D from the slits. If a bright fringe is formed opposite to one of the slits, its order is

In a double slit experiment, the distance between the slits is d. The screen is at a distance D from the slits. If a bright fringe is formed opposite to one of the slits, its order is

Consider the situation shown in fig. The two slits S_(1) and S_(2) placed symmetrically around the central line are illuminated by monochromatic light of wavelength lambda . The separation between the slit is d. The ligth transmitted by the slits falls on a screen S_(0) placed at a distance D form the slits. The slit S_(3) is at the central line and the slit S_(4) is at a distance z from S_(3) Another screen S_(c) is placed a further distance D away from S_(c) Find the ratio of the maximum to minimum intensity observed on S_(c) If z = (lambda D)/(2 d)

Consider the situation shown in fig. The two slits S_(1) and S_(2) placed symmetrically around the central line are illuminated by monochromatic light of wavelength lambda . The separation between the slit is d. The ligth transmitted by the slits falls on a screen S_(0) placed at a distance D form the slits. The slit S_(3) is at the central line and the slit S_(4) is at a distance z from S_(3) Another screen S_(c) is placed a further distance D away from S_(c) Find the ratio of the maximum to minimum intensity observed on S_(c) If z = (lambda D)/(d)

Consider the situation shown in fig. The two slits S_(1) and S_(2) placed symmetrically around the central line are illuminated by monochromatic light of wavelength lambda . The separation between the slit is d. The ligth transmitted by the slits falls on a screen S_(0) placed at a distance D form the slits. The slit S_(3) is at the central line and the slit S_(4) is at a distance z from S_(3) Another screen S_(c) is placed a further distance D away from S_(c) Find the ratio of the maximum to minimum intensity observed on S_(c) If z = (lambda D)/(4 d)

Light of wavelength lambda is incident on a slit of width d and distance between screen and slit is D. Then width of maxima and width of slit will be equal if D is

Consider two slit interference arrangements as shown in figure . The distance of screen from the slits is half the distance between the slits. Then the value of 'D' if fisrt minima on screen falls at a distance D from the centre 'C' ( lambda is the wavelength of the source).

In a YDSE arrangement, the distance of screen from the slits is half the distance between the slits. If 'lambda' is the wavelength of then the value of D such that first minima on the screen falls at a distance D from then centre 'O' is