Skip to main content
Super TutorResources
Chapter 10 of 13
QuestionsNotesFlashcardsSummaryFormulasQuizConceptsSyllabusPlan
Important Questions

Sound Waves Characteristics and Applications

CBSE · Class 9 · Science

Most important questions from Sound Waves Characteristics and Applications for CBSE Class 9 Science board exam 2026. MCQs, short answer, and long answer questions with marks.

77 questions80 flashcards5 concepts

Interactive on Super Tutor

Studying Sound Waves Characteristics and Applications? 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 9 students started this chapter today

An illustration showing a block being pulled by a constant force F at an angle theta to the horizontal displacement S, with the formula W = F ⋅ S = FS cosθ.
Super Tutor

Learn better with visuals Super Tutor has hundreds of illustrations like this across every chapter — all free to try.

Get started
77 Questions·
multiple choicemultiple correcttrue falseassertion reasoningnumerical

Sample Questions

1multiple choice
3 marks

A sonar signal returns after 0.80 s. If the speed of sound in water is 1500 m/s, how far is the object from the sonar?

Show answer

600 m

The 0.80 s is round-trip time. One-way time = 0.80 / 2 = 0.40 s. Distance = speed × time = 1500 × 0.40 = 600 m.

2multiple choice
3 marks

An echo is heard 0.6 s after shouting near a wall. If the speed of sound in air is 340 m/s, what is the distance from the wall?

Show answer

102 m

The sound travels to the wall and back in 0.6 s. One-way time = 0.6 / 2 = 0.3 s. Distance = 340 × 0.3 = 102 m.

3multiple choice
3 marks

A sound wave moves with speed 344 m/s and frequency 20000 Hz. What is its wavelength?

Show answer

0.0172 m

Use λ = v / ν = 344 / 20000 = 0.0172 m.

4multiple choice
3 marks

Sound travels 340 m in 1 second in air. How far does it travel in 0.1 s, and what is the minimum echo distance from the wall?

Show answer

34 m and 17 m

Distance in 0.1 s = 340 × 0.1 = 34 m. This is the round-trip distance. Minimum wall distance = 34 / 2 = 17 m.

+73 more questions available

Practice All

Frequently Asked Questions

What are the important topics in Sound Waves Characteristics and Applications for CBSE Class 9 Science?
Sound Waves Characteristics and Applications covers several key topics that are frequently asked in CBSE Class 9 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Sound Waves Characteristics and Applications — CBSE Class 9 Science?
Understand the core concepts first, then work through the 77 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 Sound Waves Characteristics and Applications?
There are 77 practice questions available for Sound Waves Characteristics and Applications. 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 Sound Waves Characteristics and Applications

All 13 chapters — CBSE Class 9 Science Important Questions

For serious students

Get the full Sound Waves Characteristics and Applications chapter — for free.

Quizzes, flashcards, AI doubt-solver and a step-by-step study plan for CBSE Class 9 Science.

Try Super Tutor Free
Try the full chapter — Free