A point source S is at origin of coordinate system emits a spherical sinusoidal wave in which electric field E is given by E A A

Question

A point source S is at origin of coordinate system emits a spherical sinusoidal wave in which electric field E is given by E A A P cos ut 2 v wt where r is the distance from S In addition there is a plane wave propagating along x axis This 2 X Both waves are incident on a flat screen wave is given by E A cos wt perpendicular to x axis at a distance D from the origin as shown in the figure Consider a point at a distance y D from x axis on screen If intensity at y 0 is lo then choose CORRECCT statement s by wt D D y D A Electric field at a point at a distance r from origin on screen is given A cos ut 2T cos ut 2 X X B Electric field at a point at a distance r from origin on screen is given by E 2A E 2A cos wt 2 cos wt 2 Tr C Intensity as a function y is given by I I cos DX D Intensity as a function y is given by I I cos ny

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