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Important Questions

Superposition of Waves-2 : Stationary (Standing) Waves : Vibration of Air Columns

ICSE · Class 11 · Physics

Most important questions from Superposition of Waves-2 : Stationary (Standing) Waves : Vibration of Air Columns for ICSE Class 11 Physics board exam 2026. MCQs, short answer, and long answer questions with marks.

52 questions34 flashcards5 concepts

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Illustrates a transverse wave pulse traveling along a string and reflecting from a free end. The reflected pulse is shown with no phase change (not inverted) compared to the incident pulse.
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52 Questions·
multiple choicemultiple correct

Sample Questions

1multiple choice
3 marks

A closed pipe has length 0.60 m and radius 0.05 m. If the speed of sound is 340 m/s, what is its fundamental frequency using end correction?

Show answer

132.8 Hz

For a closed pipe with end correction, n1 = v / 4(l + 0.6r). Here 0.6r = 0.6 × 0.05 = 0.03 m. Effective length = 0.60 + 0.03 = 0.63 m. So n1 = 340 / (4 × 0.63) = 340 / 2.52 ≈ 132.8 Hz.

2multiple choice
3 marks

A closed pipe has length 0.50 m and speed of sound 340 m/s. What is the difference between its first and second harmonic frequencies?

Show answer

340 Hz

For a closed pipe, consecutive harmonics differ by Δn = 2n1 = 2v / 4l. So Δn = 2 × 340 / (4 × 0.50) = 680 / 2 = 340 Hz.

3multiple choice
3 marks

A tuning fork of frequency 256 Hz is used in a resonance tube. If the first resonance length is 0.30 m, what is the second resonance length neglecting end correction?

Show answer

0.90 m

For a resonance tube, l1 = λ/4 and l2 = 3λ/4. So l2 = 3l1. If l1 = 0.30 m, then l2 = 0.90 m.

4multiple choice
3 marks

A tuning fork of frequency 400 Hz produces first and second resonance lengths of 0.21 m and 0.63 m in a resonance tube. What is the wavelength of sound?

Show answer

0.84 m

Use λ = 2(l2 - l1). Here l2 - l1 = 0.63 - 0.21 = 0.42 m. So λ = 2 × 0.42 = 0.84 m.

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What are the important topics in Superposition of Waves-2 : Stationary (Standing) Waves : Vibration of Air Columns for ICSE Class 11 Physics?
Superposition of Waves-2 : Stationary (Standing) Waves : Vibration of Air Columns covers several key topics that are frequently asked in ICSE Class 11 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Superposition of Waves-2 : Stationary (Standing) Waves : Vibration of Air Columns — ICSE Class 11 Physics?
Understand the core concepts first, then work through the 52 practice questions available for this chapter. Revise formulas and definitions regularly, and use flashcards for quick recall before the exam.
How many important questions are there in Superposition of Waves-2 : Stationary (Standing) Waves : Vibration of Air Columns?
There are 52 practice questions available for Superposition of Waves-2 : Stationary (Standing) Waves : Vibration of Air Columns. These cover multiple question types including MCQs, short answer, and long answer questions.

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