A sound wave is passing through air column in the form of compressions and rarefactions. In consecutive…
A sound wave is passing through air column in the form of compressions and rarefactions. In consecutive compressions and rarefactions, [NCERT Exemplar]
density remains constant
Boyle's law is obeyed
bulk modulus of air oscillates
there is no transfer of heat
Solution
As here,
(i) Due to compressions and rarefactions, density of the medium (air) changes. At compressed regions, density is maximum and at rarefactions, density is minimum.
(ii) As density is changing, so Boyle's law is not obeyed.
(iii) Bulk modulus remains same.
(iv) The time of compression and rarefaction is too small, i.e. we can assume adiabatic process and hence, no transfer of heat.