Question

Two wires of equal diameter, one of iron and
another of aluminum are stretched by equal
tensions. In which wire the velocity of sound will
be more?
(a) In Aluminium
(b) In iron
(c) In both
(d) Not in both​

Answer 1

Answer:

I can definitely say that

velocity of sound is greater in Iron

I tried

Ans . b) iron

Answer 2

Answer:

The correct option for this question is (c) In both.

Explanation:

The variation in sound velocity between two wires is minimal.

Similar to how iron's density differs from that of aluminium, iron's young modulus is about higher than that of aluminium.

Y(iron) ~ 2.7 x Y (aluminium)

d(iron) ~ 2.7 x d (aluminium)

where d is the density, and Y is the young modulus.

Both have a velocity of around 5100 m/s.

Generally speaking, sound moves most slowly via gases, moves more quickly through liquids, and moves fastest through solids. For instance, whereas sound travels at 343 metres per second in air, it does so at 1,481 metres per second in water (nearly 4.3 times as fast), and at 5,120 metres per second in iron (almost 15 times as fast). Steel reflects sound more quickly than any other liquid. In comparison to other provided mediums, steel has a higher density and more elastic characteristics. The distance sound energy will travel in a given amount of time and space through a given material is measured by its sound velocity, which depends on the material's density, acoustic impedance, and temperature.

Thus, the velocity of sound will be the same in both iron and aluminium.