NEET Physics Waves MCQs

A closed air column resonates with a tuning fork at a minimum length of 25 cm. What is the next resonant length for the same tuning fork?

The fundamental frequency of a closed air column is 200 Hz. If the speed of sound is 340 m/s, what is the next resonant length of the air column?

A closed organ pipe resonates at a fundamental frequency of 256 Hz. What is the length of the pipe if the speed of sound in air is 340 m/s?

A closed air column has a fundamental resonant frequency of 440 Hz. If the next resonant frequency is 1320 Hz, what is the speed of sound in the column?

An open tube is in resonance with a string. If tube is dipped in water, so that 75% of length of the tube is inside water, then ratio of frequency of tube to string is

An open tube is in resonance with a string. If tube is dipped in water, so that 75% of length of the tube is inside water, then ratio of frequency of tube to string is

A tuning fork of frequency $392\,\,Hz,$, resonates with $50\,\,cm$ length of a string under tension $\left( T \right)$. If length of the string is decreased by $2\%$, keeping the tension constant, the number of beats heard when the string and the tuning fork made to vibrate simultaneously is

If in a resonance tube a oil of density higher than that water is used then at the resonance frequency would

A cylindrical tube containing air is open at both ends. If the shortest length of the tube for resonance with a given fork is $2\,\,cm$, the next shortest length for resonance with the same fork will be

On which principle does sonometer works?