If two waves having amplitudes 2A and A and same frequency and velocity, propagate in the same direction in the same phase, the resulting amplitude will be

[MP PET 1991; DPMT 1999]

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Solution

The correct option is A
3A

In the same phase $ϕ = 0$ so resultant amplitude = $a_{1} + a_{2} = 2 A + A = 3 A$

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If two waves having amplitudes 2A and A and same frequency and velocity, propagate in the same direction in the same phase, the resulting amplitude will be [MP PET 1991; DPMT 1999]

The correct option is A 3A In the same phase ϕ=0 so resultant amplitude = a1+a2=2A+A=3A

If two waves having amplitudes 2A and A and same frequency and velocity, propagate in the same direction in the same phase, the resulting amplitude will be

[MP PET 1991; DPMT 1999]

The correct option is A
3A

In the same phase $ϕ = 0$ so resultant amplitude = $a_{1} + a_{2} = 2 A + A = 3 A$