Two sine waves travel in the same direction in a medium. The amplitude of each wave is A and the phase difference between the two waves is $120^{0}$ . The resultant amplitude will be

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Solution

The correct option is A
A

$A_{1} = A_{2} A_{n e t} = \sqrt{A^{2} + A^{2} + 2 A^{2} c o s 120^{0}} A_{n e t} = A$

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Two sine waves travel in the same direction in a medium. The amplitude of each wave is A and the phase difference between the two waves is1200. The resultant amplitude will be

The correct option is A A A1=A2Anet=√A2+A2+2A2cos1200Anet=A

Two sine waves travel in the same direction in a medium. The amplitude of each wave is A and the phase difference between the two waves is $120^{0}$ . The resultant amplitude will be

The correct option is A
A

$A_{1} = A_{2} A_{n e t} = \sqrt{A^{2} + A^{2} + 2 A^{2} c o s 120^{0}} A_{n e t} = A$