CBSE Class 12-science Answered
Please refer to the uploaded image for the doubt
Asked by arjunsah797 | 15 May, 2022, 13:18: PM
Expert Answer
Part (a)
Initially disc P1 and disc P2 are oriented so that intensity is maximum . Hence optical axis of P1 and P2 are parallel.
If P2 is rotated through 90o , then optical axis are perpendicular to each other.
hence we get dark , i.e., extinction is produced
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Part (b)
If disc P1 is rotated through 90o now, then both optical axis are parallel . Hence the field is bright
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Part (c)
If disc P2 is rotated through 90o now, then both optical axis are perpendicular . Hence the field is dark
Answered by Thiyagarajan K | 15 May, 2022, 14:16: PM
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