Skip to main content
Super TutorResources
Chapter 26 of 30
QuestionsNotesFlashcardsSummaryFormulasQuizConceptsSyllabusPlan
Important Questions

Wave Motion

ICSE · Class 11 · Physics

Most important questions from Wave Motion for ICSE Class 11 Physics board exam 2026. MCQs, short answer, and long answer questions with marks.

60 questions38 flashcards5 concepts

Interactive on Super Tutor

Studying Wave Motion? Get the full interactive chapter.

Quizzes, flashcards, AI doubt-solver and a step-by-step study plan — built for important questions and more.

Try Super Tutor — Free

1,000+ Class 11 students started this chapter today

A comparison showing the key differences between mechanical waves (requiring a medium, e.g., sound, water waves) and electromagnetic waves (not requiring a medium, e.g., light, radio waves). Include e
Super Tutor

Super Tutor has 5+ illustrations like this for Wave Motion alone — flashcards, concept maps, and step-by-step visuals.

See them all
60 Questions·
multiple choicemultiple correct

Sample Questions

1multiple choice
3 marks

At 0°C, sound travels at 331 m/s. Estimate the speed at 30°C using v = 331 + 0.61t.

Show answer

349.3 m/s

Substitute t = 30°C in v = 331 + 0.61t. So v = 331 + 0.61 × 30 = 331 + 18.3 = 349.3 m/s.

2multiple choice
3 marks

A sound wave travels through air at 344 m/s. If the speed is proportional to the square root of absolute temperature, and the speed at 0°C is 331 m/s, find the approximate temperature in °C.

Show answer

21 °C

Use v_t = 331(1 + t/(2×273)). So 344 = 331(1 + t/546). Divide by 331: 344/331 ≈ 1.0393. Hence t/546 ≈ 0.0393, so t ≈ 21.5 °C, about 21°C.

3multiple choice
3 marks

The speed of sound in air at 0°C is 331 m/s. Find the speed at 50°C using the approximate formula v = 331 + 0.61t.

Show answer

361.5 m/s

v = 331 + 0.61 × 50 = 331 + 30.5 = 361.5 m/s.

4multiple choice
3 marks

Sound is travelling in air where the wind speed along the direction of sound is 6 m/s and the actual sound speed is 331 m/s. Find the resultant speed of sound along that direction.

Show answer

337 m/s

When wind blows along the direction of sound, speeds add. So resultant speed = 331 + 6 = 337 m/s.

+56 more questions available

Practice All

Frequently Asked Questions

What are the important topics in Wave Motion for ICSE Class 11 Physics?
Wave Motion 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 Wave Motion — ICSE Class 11 Physics?
Understand the core concepts first, then work through the 60 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 Wave Motion?
There are 60 practice questions available for Wave Motion. These cover multiple question types including MCQs, short answer, and long answer questions.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

More resources for Wave Motion

All 30 chapters — ICSE Class 11 Physics Important Questions

For serious students

Get the full Wave Motion chapter — for free.

Quizzes, flashcards, AI doubt-solver and a step-by-step study plan for ICSE Class 11 Physics.

Try Super Tutor Free
Try the full chapter — Free