Student Login

Home›Chapters›Wave Motion PYQs›Organ Pipes & Resonance Tube›Question 98

MHT CET 2020 (19 Oct, Shift 2) · Organ Pipes & Resonance Tube

Organ Pipes & Resonance Tube question from MHT CET 2020 (19 Oct, Shift 2)

Q98MHT CET 2020 · 19 OCT · SHIFT 2Medium

Organ Pipes & Resonance Tube

The fundamental frequency of a closed pipe is 400 Hz. If $\frac{1}{3}$ rd pipe is filled with water, then the frequency of 2nd harmonic of the pipe will be (neglect and correction)

Show answer and solution

Answer: (b)

Closed pipe: $n_0 = \frac{v}{4L} = 400$ Hz.
With $\frac{1}{3}$ filled, air column $= \frac{2L}{3}$ , new fundamental $= 400 \times \frac{3}{2} = 600$ Hz.
A closed pipe gives only odd harmonics, so the next (second) note is the 3rd harmonic: $3 \times 600 = 1800$ Hz.
So the answer is (b) 1800 Hz.

Report a mistake

More questions on Organ Pipes & Resonance Tube

A closed organ pipe has a fundamental frequency of 1.5 kHz. The number of overtones that…JEE Main 2019 (10 Jan, Shift 2)
In a fundamental mode,the time required for the sound wave to reach upto the closed end…MHT CET 2019 (2 May, Shift 1)
A pipe open at both ends and a pipe closed at one end have same length. The ratio of…MHT CET 2019 (3 May, Shift 1)
A tuning fork with frequency 800 Hz produces resonance in a resonance column tube with…NEET 2019
A tuning fork of frequency 480 Hz is used in an experiment for measuring speed of sound…JEE Main 2019 (12 Apr, Shift 2)
Two open pipes of different lengths and same diameter in which the air column vibrates…MHT CET 2019 (2 May, Shift 1)
A resonance tube is old and has jagged end. It is still used in the laboratory to…JEE Main 2019 (12 Jan, Shift 2)
The end correction of a resonance column is 1 cm. If the shortest length resonating with…JEE Main 2018 (16 Apr, Shift 1)