Physics Question from JEE Main 2024 · 30 January, Shift 1

In a closed organ pipe, the frequency of the fundamental note is $30 \, \text{Hz}$. A certain amount of water is now poured in the organ pipe so that the fundamental frequency is increased to $110 \, \text{Hz}$. If the organ pipe has a cross-sectional area of $2 \, \text{cm}^2$, the amount of water poured in the organ pipe is $x$ grams. (Take speed of sound in air as $330 \, \text{m/s}$)