Waves and its Characteristics: Practice Problem & Solution
Assertion (A): For a given medium in a wave, particle velocity varies w.r.t. time, while the wave velocity is independent of time. Reason (R): For propagation of mechanical wave, medium must have the properties of elasticity and inertia.
Short Solution (Best for NEET):
To solve this problem, we apply the core principles of Waves and its Characteristics. Understanding the underlying formula is key to arriving at the correct answer below:
Particle velocity in a wave is oscillatory and time-dependent, while wave velocity in a homogeneous medium is constant. So, Assertion (A) is true. Mechanical waves require elasticity for restoring force and inertia for propagation. So, Reason (R) is true. However, (R) explains wave propagation conditions, not the difference in velocities.
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