Skip to main content
Super TutorResources
Chapter 25 of 30
Important Questions

Waves — Important Questions

ICSE · Class 11 · Physics

62 important questions from Waves for ICSE Class 11 Physics, with answers. Includes multiple choice and multiple correct questions.

62 questions34 flashcards8 formulas & key relations5 concepts

Interactive on Super Tutor

Studying Waves? 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

Free trial, no card needed.

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

Learn better with visuals Super Tutor pairs illustrations like this with notes and quizzes for Waves.

62 Questions·
multiple choicemultiple correct

Important Questions from Waves

1multiple choice
3 marks

A wave has period 0.2 s and wavelength 1.5 m. What is its speed?

Show answer

7.5 m/s

First find frequency using n = 1/T = 1/0.2 = 5 Hz. Then use v = nλ = 5 × 1.5 = 7.5 m/s. Two steps are needed.

2multiple choice
3 marks

A wave is written as y = 0.05 sin 2π(t/0.4 - x/1.2). What is its speed?

Show answer

3 m/s

Compare with y = a sin 2π(t/T - x/λ). Here T = 0.4 s and λ = 1.2 m. Use v = λ/T = 1.2/0.4 = 3 m/s, or v = nλ with n = 1/T = 2.5 Hz.

3multiple choice
3 marks

A particle at distance x = 0.75 m from the origin has phase lag φ = kx. If λ = 1.5 m, what is φ?

Show answer

π rad

Use k = 2π/λ = 2π/1.5 = 4π/3 rad/m. Then φ = kx = (4π/3) × 0.75 = π rad. So the phase lag is π rad.

4multiple choice
3 marks

Two particles in a wave are separated by 3 m. If the wavelength is 1.5 m, what is their phase difference?

Show answer

4π rad

Use Δφ = (2π/λ)Δx. Here Δx = 3 m and λ = 1.5 m. So Δφ = (2π/1.5) × 3 = 4π rad.

+58 more questions on Waves (ICSE Class 11 Physics)

Practise All

Frequently Asked Questions

What are the important topics in Waves for ICSE Class 11 Physics?
Key topics in Waves include Nature of Wave Motion, Types of Waves, Basic Terms and Relations, Progressive Wave Equation. Study these first, then practise questions on each for Class 11 exams.
How many important questions are there in Waves?
Super Tutor has 62 practice questions for Waves, including multiple choice, multiple correct questions. A sample with answers is on this page.

Sources & Official References

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

More resources for Waves

All ICSE Class 11 Physics Important Questions

For serious students

Get the full Waves chapter — start free.

Quizzes, flashcards, an AI doubt solver and a study plan for ICSE Class 11 Physics. Free to start, no card needed.

Try Super Tutor Free
Try this chapter free