Assertion: The transverse wave is travelling along a string in the positive x axis as shown. Points A & P1 moving ↓ (downward) and points C & P2 moving (upward). Reason: In a wave propagating in positive x direction the points with +ve slope move downward and vice versa.

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Assertion-ReasonTransverse Waves and Their PropertiesDisplacement Relation for a Progressive Wave

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Assertion: Transverse waves can, therefore, be propagated only in those media, which can sustain shearing stress, such as solids and not in fluids. Reason: Fluids, as well as, solids can sustain compressive strain; therefore, longitudinal waves can be propagated in all elastic media.

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Assertion: In a harmonic progressive wave of a given frequency, all particles have the same phase but different amplitudes at a given instant of time. Reason: In a stationary wave, all particles between two nodes have the same amplitude at a given instant but have different phases.

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