in $+x)$

A certain string on a piano is tuned to produce middle $)=(261\mathrm{.}63Hz$ by carefully adjusting the tension in the string. For a fixed wavelength, what is the frequency when this tension is tripled?

$87\mathrm{.}21$ Hz

$151\mathrm{.}05$ Hz

$370\mathrm{.}00$ Hz

$453\mathrm{.}16$ Hz

$784\mathrm{.}89$ Hz

in $+x)$

A certain string on a piano is tuned to produce middle $)=(261\mathrm{.}63Hz$ by carefully adjusting the tension in the string. For a fixed wavelength, what is the frequency when this tension is tripled?

$87\mathrm{.}21$ Hz

$151\mathrm{.}05$ Hz

$370\mathrm{.}00$ Hz

$453\mathrm{.}16$ Hz

$784\mathrm{.}89$ Hz