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13. Sound Class 8 SCIENCE Solutions English Medium-Additional Questions With Solutions
13. Sound Class 8 SCIENCE Solutions English Medium-Additional Questions With Solutions Get chapter-wise detailed explanations, step-by-step answers, important questions and exam-ready study material in Hindi and English medium.
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13. Sound Class 8 SCIENCE Solutions English Medium-Additional Questions With Solutions
NCERT Solutions for Class 8 are specially prepared according to the latest CBSE syllabus (2026-27) to help students understand every concept clearly. These solutions provide step-by-step explanations, accurate answers, and exam-oriented guidance for all chapters. Class 8 students can improve their problem-solving skills, strengthen conceptual understanding, and prepare confidently for school as well as board examinations. All questions are solved in a simple and easy-to-understand language for both Hindi and English medium learners.
13. Sound Class 8 SCIENCE Solutions English Medium-Additional Questions With Solutions
NCERT Solutions Class 8 SCIENCE English Medium
13. Sound
Topic: Additional Questions With Solutions
Additional Questions With Solutions
Ques: What is sound?
Ans: When an object vibrates, it produces sound.
Ques: What is eco sound?
Ans: When any sound reflects by striking on any medium, that sound heard us again and again. This is called eco sound.
Ques: What is minimum audible range for human ears?
Ans: The audible range is 20 Hz to 20,000 Hz.
Ques: What is minimum audible distance from sound source to barrier medium?
Ans: 17.2 m.
Ques: What is S.I unit of frequency?
Ans: Hz (Hertz).
Ques: What is S.I unit of wave length?
Ans: S.I unit of wave length is meter.
Ques: By what organ human produces sound?
Ans: Vocal cord. (Larynx)
Ques: How do we produce sound?
Ans: Two vocal cords, are stretched across the voice box or larynx in such a way that it leaves a narrow slit between them for the passage of air When the lungs force air through the slit, the vocal cords vibrate, producing sound.
Ques: In which mediums sounds propagate?
Ans: Solid, liquid and gas.
Ques: In which medium sound does not propagate?
Ans: Vacuum.
Ques: What is eardrum?
Ans: The shape of the outer part of the ear is like a funnel. When sound enters in it, it travels down a canal at the end of which a thin membrane is stretched tightly. It is called the eardrum.
Ques: Write the function of eardrum.
Ans: The eardrum sends vibrations to the inner ear.
Ques: What is oscillatory motion?
Ans: The to and fro motion of an object is known as vibration. This motion is also called oscillatory motion.
Ques: What is frequency? Write is its S.I unit?
Ans: The number of oscillations or vibrations per second is called the frequency of oscillation. The frequency is expressed in hertz (Hz).
Ques: On which measure does loudness of sound depend?
Ans: On its amplitudes.
Ques: What are two important properties of sound?
Ans: Amplitude and frequency are two important properties of any sound.
All Topics From 13. Sound
See other sub-topics of this chapter:
1. Chapter Review 2. Text Book Exercise 3. Text Book Exercise 4. Additional Questions With Solutions 5. Additional Questions With SolutionsNCERT Solutions Class 8 Hindi and English Medium – Complete Study Material
NCERT Solutions Class 8 students ke liye specially CBSE latest syllabus (2026-27) ke according prepare kiye gaye hain. Yeh solutions Hindi aur English medium dono ke liye available hain, jisse har student apni language preference ke hisaab se padh sakta hai. Har chapter ke sabhi prashnon ke step-by-step answers diye gaye hain jo concept clarity aur exam preparation me madad karte hain.
Chapter-Wise Detailed Explanations
Class 8 ke liye diye gaye Chapter Wise NCERT Solutions me har question ka detailed aur easy explanation diya gaya hai. Chahe aap CBSE Board Exam Preparation kar rahe ho ya school test ke liye revise kar rahe ho, yeh solutions aapko complete understanding denge. Har answer simple language me likha gaya hai jisse students concepts ko easily grasp kar saken.
Hindi and English Medium Support
Students Hindi aur English medium dono me NCERT Book Solutions Class 8 access kar sakte hain. Yeh dual language support un students ke liye helpful hai jo apni regional language me better samajhna chahte hain. Sabhi answers CBSE Latest Syllabus 2026-27 ke anusaar update kiye gaye hain.
Important Features of NCERT Solutions
- Class 8 NCERT Solutions PDF
- CBSE Class 8 Study Material
- NCERT Book Questions and Answers
- Exam Oriented Important Questions
- Step-by-Step Detailed Solutions
- Concept Clarity and Revision Notes
Why Students Should Use NCERT Solutions?
Aaj ke competitive environment me sirf textbook padhna kaafi nahi hota. NCERT Solutions for Class 8 students ko practice aur conceptual understanding dono provide karte hain. Yeh solutions unhe exam pattern samajhne, frequently asked questions practice karne aur high score achieve karne me madad karte hain. Regular practice se students apne weak topics ko improve kar sakte hain.
Best Resource for Exam Preparation
Agar aap Class 8 CBSE Preparation ke liye ek trusted aur reliable source dhundh rahe hain, to yeh NCERT Solutions perfect choice hain. Yeh study material school exams, unit tests, half-yearly aur annual exams ke liye equally useful hai. Har chapter ke answers accurate, verified aur student-friendly format me diye gaye hain.
Isliye agar aap NCERT Solutions Class 8 Hindi and English Medium search kar rahe hain, to yahan aapko complete chapter-wise solutions milenge jo aapki academic journey ko strong aur confident banayenge.