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ENTRANCE TEST – 2010 :: Discussion
| 42. | Two sound waves having the same amplitudes are moving in the same direction are out of phase. The amplitude of the resultant wave is | |
| A. | Zero amplitude | |
| B. | The sum of amplitude of the two waves | |
| C. | Difference of the amplitudes of the two waves | |
| D. | Double the amplitude of either wave | |
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