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Waves of amplitudes 3 cm and 5 cm interfere. What is the ratio Imax : Imin?
A8 : 2
B4 : 1
C64 : 4
D16 : 1
Answer & Solution
Correct answer: D. 16 : 1
Imax is proportional to (5+3)^2 = 64 and Imin to (5-3)^2 = 4, so the ratio is 16 : 1.
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