39. Two polaroids are crossed to each other. Now,one of them is rotated through 60^° . The percentageof incident unpolarised light that passes through thesystem will besep451) 30%2) 37.5% 3) 40%4) 6 0%la

39. Two polaroids are crossed to each other. Now,one of them is rotate

1.	39. Two polaroids are crossed to each other. Now,one of them is rotated through 60^° . The percentageof incident unpolarised light that passes through thesystem will besep451) 30%2) 37.5% 3) 40%4) 6 0%la
Answer» 39. Two polaroids are crossed to each other. Now,one of them is rotated through 60^° . The percentageof incident unpolarised light that passes through thesystem will besep451) 30%2) 37.5% 3) 40%4) 6 0%la

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39. Two polaroids are crossed to each other. Now,one of them is rotated through 60^° . The percentageof incident unpolarised light that passes through thesystem will besep451) 30%2) 37.5% 3) 40%4) 6 0%la

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