MHT CET Medical202622 April 2026Morning ShiftPhysicsWaves and SoundActual
Two copper wires of radii r₁ and r₂ ( r₁ > r₂ ) are subjected to same tension and are plucked. Tansverse waves set up will
Options
- Atravel faster in the thicker wire.
- Btravel faster in the thinner wire.
- Ctravel with the same velocity in bothe the wires.
- Dnot travel through both the wires.
Correct answer
B. travel faster in the thinner wire.
Step-by-step solution
The velocity of a transverse wave in a stretched wire is given by v = T , where T is the tension and is the linear mass density. The linear mass density can be expressed as = r^2 , where r is the radius of the wire and is the density of the material. Substituting into the velocity formula gives v = T r^2 = 1 r T . Since both wires are made of copper, their densities are the same. The tension T is also the same for both wires. Therefore, the velocity v is inversely proportional to the radius r , which means v 1 r .