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In the figure shown S is the saurce of white light kept at a distance x_(0) frorn the plane of the slits. The source moves with a constant specd u towards the slits on the line perpendicular to the plane of the slits and passing through the slit S_(1). Find the instanteneous velocity (magnituce and direction). of the central maxima at time t having range 0 le t lt lt (x_(0)-d)/(u). Assume that D gt gt d. |
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Answer» SOLUTION :`tan THETA=(d)/(2X) and y_(0)=D tan theta=D.(d)/(2x)` `v_0=(dy_(0))/(dt)=(-Dd)/(2x^2).dx/dt RIGHTARROW v_(0)=(Dd)/(2x^(2)). u""V_(0)=(Ddu)/(2(x_(0)-ut)^(2))("DOWNWARDS")` |
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