A thin prism of angle 4° and μ=1.5 is 1.5 m before a screen. It is reversed. The separation of the two spot positions is closest to:
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A thin prism of angle 4° and μ=1.5 is 1.5 m before a screen. It is reversed. The separation of the two spot positions is closest to:

G1 Physics · Accepted Answer

One orientation gives δ=2° and displacement≈L tan2°. Reversal changes sign, so separation≈2L tan2°≈0.1048 m=10.48 cm.