Two tuning forks having frequencies 160 Hz and 170 Hz are sounded together to produce sound waves. The velocity of sound in air is 326.4 ms–1. Calculate the difference between wavelengths of these waves.

Q.12 Two tuning forks having frequencies 160 Hz and 170 Hz are sounded together to produce sound waves. The velocity of sound in air is 326.4 ms^–1. Calculate the difference between wavelengths of these waves.

Doubtly Asked 28 Oct 2026 Board exam · July 2025 hsc 12th Save WhatsApp Report

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Answer: 0.12 m

\[\lambda_1 = \frac{v}{n_1} = \frac{326.4}{160} = 2.04\ \text{m},\qquad \lambda_2 = \frac{v}{n_2} = \frac{326.4}{170} = 1.92\ \text{m}\]\[\lambda_1 - \lambda_2 = 2.04 - 1.92 = 0.12\ \text{m}\]

Doubtly AI · 28 Oct 2026 AI-verified · Oct 2026 Report

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Two tuning forks having frequencies 160 Hz and 170 Hz are sounded together to produce sound waves. The velocity of sound in air is 326.4 ms–1. Calculate the difference between wavelengths of these waves.

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