The intensity observed in an interference pattern is

PHYSICS · Single correct · CBSE · Physics · Units and Measurements · Units and Measurements

Problem

The intensity observed in an interference pattern is I=I0sin⁡2θI=I_0\sin^2\theta. At θ=30∘\theta=30^\circ, I=5±0.002I=5\pm0.002. The percentage error in the angle is (1) 43×10−2%4\sqrt{3}\times10^{-2}\% (2) 4π×10−2%\frac{4}{\pi}\times10^{-2}\% (3) 43π×10−2%\frac{4\sqrt{3}}{\pi}\times10^{-2}\% (4) 3×10−2%\sqrt{3}\times10^{-2}\%

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