question_answer

The minimum audible wavelength at room temperature in air is about (a) \[0.2\,\,\overset{{}^\circ }{\mathop{\text{A}}}\,\]                                    (b) \[5\,\,\overset{{}^\circ }{\mathop{\text{A}}}\,\] (c) 5 cm to 200 cm            (d) 20 mm

Answer:

Since, \[{{\lambda }_{minimum}}\Rightarrow {{n}_{maximum}}\] \[\Rightarrow \] 20,000 Hz. \[\lambda ~=v/n=330/20000=16.5mm.\]