AMU Engineering 2020 solved paper Solved Paper

We know the velocity of sound in a gaseous medium is given by
V=√‌

γp

ρ

At constant temperature pV= constant
Volume of gas, V=‌

M

ρ

⇒‌‌‌

PM

ρ

= Constant
As M is constant, therefore ‌

P

ρ

= Constant
Hence, changein pressure has no effect on velocity of sound.