The condition whether 15 t h order maximum is visible.

Question

A two-slit interference experiment uses laser light of wavelength 655 nm. The slits are 0.230 mm apart and 1.75 m from the screen on which the interference pattern appears. The intensity of the light at the central bright fringe is I0 = 0.0520 W/m2. Find (a) the intensity at a point on the screen 6.50 mm from the central bright fringe and (b) the distance on the screen from the central bright fringe to the nearest point where the intensity is I0/4.

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Chapter 37, Problem 40AP

To determine

The condition whether 15th order maximum is visible.

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