Wave OpticsHard
Question
In a Young′s double slit experiment, green light is incident on the two slits. The interference pattern is observed on a screen. Which of the following charges would cause the observed fringes to be more closely spaced ?
Options
A.Reducing the separation between the slits
B.Using blue light instead of green light
C.Used red light instead of green light
D.Moving the light source further away from the slits.
Solution
Fringes to be more closed when fringe width becomes reduced fringe width β = 
As decrease also decreases (λblue < λgreen)
As decrease also decreases (λblue < λgreen)Create a free account to view solution
View Solution FreeMore Wave Optics Questions
If the ratio of the intensity of two coherent sources is 4 the visibility [(Imax - Imin) / (Imax + Imin)] of the fringes...If we have a zone plate in which all the zones except first, third and the sixth is blocked, then the resultant amplitud...Find the half angular width of the central bright maximum in the Fraunhofer diffraction pattern of a slit of width 12 &#...A plane wave front of wave length 6000 is incident upon a slit of 0.2mm width, which enables Fraunhofer′s diffract...Soap bubble appears coloured due to the phenomenon of : -...