NEET Physics Waves MCQs

A closed organ pipe and an open organ pipe have the same fundamental frequency. If the speed of sound in air is $v$, what is the ratio of their lengths?

In a resonance tube experiment, the first two resonance lengths are observed at 16 cm and 50 cm. The end correction of the tube is:

Two organ pipes, one open and one closed at one end, resonate at their first overtones with frequencies 600 Hz and 750 Hz respectively. If the speed of sound is 330 m/s, the ratio of the lengths of the pipes is:

An open organ pipe of length 50 cm resonates at a frequency of 340 Hz. If the speed of sound in air is 340 m/s, which harmonic is this?

A sonometer wire resonates with a tuning fork. If the tension in the wire is increased by four times, the length of the wire should be _______ to maintain resonance with the same tuning fork.

A sonometer wire is in unison with a tuning fork of frequency 300 Hz. If the tension in the wire is increased, the length of the wire must be ______ to bring it back into unison with the tuning fork.

A sonometer wire under a tension resonates with a tuning fork of frequency 480 Hz. When the length of the wire is increased by 10 cm, it resonates with the same fork when the tension is increased by 20%. What is the original length of the wire?

A sonometer wire resonates with a given tuning fork. To obtain resonance with the next higher harmonic of the same tuning fork, keeping the tension constant, the length of the wire should be:

A sonometer wire of length 'l' under tension 'T' vibrates in its fundamental mode with a frequency 'f'. If a small piece of metal of mass 'm' is placed at the midpoint of the wire, and the tension is increased to '4T' to maintain the same fundamental frequency 'f', what is the mass 'm' in terms of the linear density 'μ' of the wire?

Two sonometer wires of the same material and cross-sectional area are stretched with tensions T and 4T respectively. If both wires resonate with the same fundamental frequency when a small rider of mass 'm' is placed at the center of the second wire (4T), what is the ratio of their lengths?