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1. |
Two waves having intensity in the ratio 25 : 4 produce interference. The ratio of the maximum to the minimum intensity is [CPMT 1999] |
A. | 5 : 2 |
B. | 7 : 3 |
C. | 49 : 9 |
D. | 9 : 49 |
Answer» D. 9 : 49 | |