Science
Frequency
आवृत्ति
In this Class 9 Science topic from “Sound Waves: Characteristics and Applications,” students learn that frequency is the number of complete vibrations or oscillations made in one second. Measured in hertz (Hz), it is a key characteristic of sound and helps explain why sounds differ in pitch: higher frequency produces a higher-pitched sound, while lower frequency produces a deeper sound. The topic also connects frequency with vibrating sources and everyday uses of sound.
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Practice questions are not available for this topic yet. We plan to add questions with clear explanations soon. You can keep practising other topics in the meantime.
- Class / subject
- 9 · Science
- Chapter
- Sound Waves: Characteristics and Applications
- Topic
- Frequency
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