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Can anyone give me a detailed solution for this prmb?
Visibility, V = Imax – Imin / Imax + Imin = [ 2 (I1 * I2)½ / (I1 + I2) ] Multiplying both numerator and denominator by 1 / I2 ,So, V = [ 2 (I1 / I2)½ / ((I1 / I2) + 1) ] = 2 (β)½ / β+1Ans: Option A
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