Figure P33.1 shows eight point sources of light, (a-h), and two detectors, A and B. The point sources are evenly spaced, with (0.10 mathrm{~m}) between

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Figure P33.1 shows eight point sources of light, \(a-h\), and two detectors, A and B. The point sources are evenly spaced, with \(0.10 \mathrm{~m}\) between adjacent sources, and detector A shields part of detector B from the point sources. If no light is reflected from any nearby objects, how many of the point sources illuminate any part of (a) detector \(\mathrm{A}\) and \((b)\) detector B?

Data from Figure P33.1

+x F 0.20 m B A 0.20 m 0.70 m- -0.41 m abcdefgh