Neco Model Questions Vol1 2023 Physics Question 40

Practice objective / multiple choice question 40 from the 2023 Neco Model Questions Vol1 Physics examination.

Neco Model Questions Vol1 2023 Physics Objective / Multiple Choice Medium Difficulty
Question 40 NECO_MODEL_QUESTIONS_VOL1 • 2023 • PHYSICS • objective

A cylindrical pipe closed at one end has an effective length of \(0.85\ \text{m}\). The air inside the pipe is at a temperature of \(27^{\circ}\text{C}\). (i) Calculate the speed of sound in the air at this temperature using \(v = 331 + 0.6T\) (with \(v\) in \(\text{m s}^{-1}\) and \(T\) in \(^\circ\text{C}\)). (ii) Determine the fundamental frequency of the pipe (closed at one end). (iii) If a tuning fork of frequency \(440\ \text{Hz}\) is sounded nearby, what beat frequency will be heard? Give all answers to three significant figures.

Answer Options

A. v = 342 m/s; fundamental frequency = 101 Hz; beat frequency = 339 Hz
B. v = 350 m/s; fundamental frequency = 103 Hz; beat frequency = 337 Hz
Correct Answer C. v = 347 m/s; fundamental frequency = 102 Hz; beat frequency = 338 Hz
D. v = 345 m/s; fundamental frequency = 100 Hz; beat frequency = 340 Hz
Correct Answer
C
Correct Option:
v = 347 m/s; fundamental frequency = 102 Hz; beat frequency = 338 Hz

About This Question

This is Neco Model Questions Vol1 2023 Physics Question 40. It is one of the objective questions from the 2023 Neco Model Questions Vol1 Physics examination.

Difficulty level: Medium .

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