physics query

[hassam]

 

[hassam]

it shud be A ryt....?

 

[MW24595]

I think it's B. The intensity or brightness of the fringe decreases with distance from the central maxima, i think. What does it say on the Mark Scheme?

 

[hassam]

well it was A in ms and i was kind of confused whether A or B.....BUT the thing to notice or the trick was THAT FRINGE WIDTH Remains the same across the in interference pattern as opposed to diffraction pattern....see X axis of graph

 

[stevemoham]

Hassam, the answer is A. In an interference pattern, the is a series of maxima and minima (bright and dark fringes). These fringes are equally spaced. The graph in A represents this. In an actual experiment, the graph would be similar to A, but the intensity will decrease as you move away from the central maxima.

Graph B - this is for single slit diffraction.
Graph C - normal SHM
Graph D- I have no idea.