This page is dedicated for Class 9th Sound MCQ Quiz. Master the principles of sound with our free “Sound” MCQ quiz for Class 9. Learn about the nature of sound, its properties, and how it travels. Ideal for exam readiness

9th Sound MCQ

Time: 10 Minutes for 10 Question.

9th Science: Sound

1 / 10

1. What condition is necessary to hear an echo?

Obstacle must be near

Time gap must be over 0.1 s

Temperature must be low

Listener must be underwater

2 / 10

2. What is the frequency of ultrasonic sound?

Below 20 Hz

Between 20 Hz and 200 Hz

Above 20,000 Hz

Equal to 100 Hz

3 / 10

3. What is sound?

A solid form of energy

A magnetic wave

A form of energy that produces hearing

A source of light

4 / 10

4. What is the relation between speed, wavelength, and frequency?

v = λ + f

v = f/λ

v = λ × f

v = f²/λ

5 / 10

5. What is the human audible range?

10 Hz to 15,000 Hz

20 Hz to 20,000 Hz

100 Hz to 1,000 Hz

50 Hz to 30,000 Hz

6 / 10

6. What does amplitude of a wave determine?

Direction of sound

Pitch

Speed

Loudness

7 / 10

7. What is the time taken for one oscillation called?

Speed

Frequency

Time period

Wavelength

8 / 10

8. How is ultrasound used in industry?

For lighting

For heating water

To detect metal defects

To color materials

9 / 10

9. Which part of a sound wave determines its pitch?

Amplitude

Wavelength

Frequency

Speed

10 / 10

10. What is the SI unit of frequency?

Joule

Watt

Hertz

Newton

Insert Full Name and email for result.

Full NameEmail

Your score is

Chapter wise 9th Science MCQ

About 9th Sound MCQ

The “Sound” MCQ quiz for Class 9 helps students understand the nature and properties of sound. This chapter begins with the definition of sound as a form of energy that travels through a medium (solid, liquid, or gas) as a longitudinal wave. The quiz covers the characteristics of sound waves, including frequency, wavelength, amplitude, and velocity.

You will learn about the production of sound by vibrating objects and how sound travels through different media. The quiz also explores the concept of echo, which is the reflection of sound, and the conditions necessary for an echo to be heard. It covers the laws of reflection of sound and applications like sonar and ultrasound.

The quiz includes questions on the human ear and how it detects sound, including the structure and function of its different parts. You will also learn about the effects of noise pollution and ways to reduce it.

By taking this MCQ quiz, you will reinforce your understanding of the principles of sound, its properties, and its applications in real-world scenarios. This quiz is designed to challenge your comprehension and application of the material, ensuring you have a solid grasp of the concepts of sound.

This quiz is an excellent resource for self-assessment, helping you to identify areas where you need more practice and ensuring you are well-prepared for your exams. The comprehensive review provided by the quiz will enhance your understanding and retention of the material, making it an invaluable tool for exam preparation.

Keywords: Class 9 science MCQ quiz, free MCQ quiz, Sound, characteristics of sound waves, echo, reflection of sound, human ear, noise pollution, exam preparation, key concepts.

Important Link

NCERT Books PDF
Our Youtube Channel(Subscribe for view Few Quiz Question Answers)

Vidyalite Team

Website

Give Your Rating and Review

Helpful for your studies? Leave a review with 5-star rating!

No ratings yet. Be the first to rate!

Your Name (Required):

Your Email (Required, not published):

Your Rating:

★ ★ ★ ★ ★

Your Review: