The figure shows a modified Young's double slit experimental set-up.
Here `SS_(2)-SS1=lamda//4.`
(a) Write the condition for constructive interference.
(b) Obtain an expression for the fringe width.

The figure shows a modified Young’s double slit experimental set-up. Here S S_(2)-S S_(1)=lambda//4 . (a) Write the condition for constructive interference. (b) Obtain an expression for the fringe width.

The figure shows a modified Young’s double slit experimental set-up. Here S S_(2)-S S_(1)=lambda//4 . (a) Write the condition for constructive interference. (b) Obtain an expression for the fringe width.

Fig. shows an experimental set up simillar to Young's double slit experiment to observe interference of light. Here SS_(2) - SS_(1) = lambda//4 . Write down the conditions of (i) Contstructive interference (ii) Destructive interference at any point P in terms of path diff. (S_(2)P - S_(1)P) . Does the central fringe observed in the above set up lie above or below O ? Give reason.

State the importance of coherent sources in the phenomenon of interference. In Young's double slit expet-ment to produce interference pattern obtain the conditions for constructive and destructive interference. Hence deduce the expression for the fringe width. How does the firinge width get affected, if the entire experimental apparatus of Young's is immersed in water ?

State the importance of coherent sources in the phenomenon of interference. In Young's double slit expet-ment to produce interference pattern obtain the conditions for constructive and destructive interference. Hence deduce the expression for the fringe width. How does the firinge width get affected, if the entire experimental apparatus of Young's is immersed in water ?

In Young's double slit experiment describe briefly how bright and dark fringes are obtained on the screen kept in front of a double slit. Hence obtain the expression for the fringe width.