1.

In the figure shown three slits s_(1),s_(2) and s_(3) are illuminated with of wavelength lambda.lambda ltltd and D gtgt d. Each slit prouduces same intensity I on the screen. If intensity at the point on screen directly infront of s_(2) is 3I then the maximum value of lambda is (nd^(2))/(2D) Find value of n.

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SOLUTION :N//a


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