Physics

Problem

An organ pipe of

(3.9 \pi)

m long, open at both ends is driven to third harmonic standing wave. If the amplitude of pressure oscillation is

1\%

of mean atmospheric pressure

[p_0 = 10^5 \text{ N/m}^2]

. The maximum displacement of particle from mean position will be [Given, velocity of sound =

200 \text{ m/s}

and density of air =

1.3 \text{ kg/m}^3

] a.

2.5 \text{ cm}

5 \text{ cm}

1 \text{ cm}

2 \text{ cm}