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Q.

For progressive wave : y=(2 cm)sin(3t4x)
Statement-1 : The particle at x = 0 is moving towards positive y–axis at t = 0.
Statement-2 : The particle at x = 8m is in phase with particle at x = 1m.
Statement-3 : The acceleration of particle at x=π8m  at t=π6 sec is increasing in magnitude.
Statement-4 : The velocity of particle at  x=π6m  is in direction of propagation of wave at all times.
The CORRECT statement are :

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a

1

b

1 and 3

c

1, 2 and 3

d

1, 2, 3 and 4

answer is B.

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Detailed Solution

VP=vx  slope
x=π8  at  t=π6
Particle is at mean position

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