cbse sst notes on science exploration chapter 10

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Kriti

Asked: October 14, 2026In: Class 9 Science

The graphical representation of two sound waves A and B propagating at the same speed of 345 m s⁻¹ is shown in Fig. 10.33. What is the wavelength of each of them? Also, calculate their frequencies.

Wave A completes one cycle in 2.5 cm, giving 13,800 Hz frequency. Wave B completes one cycle in 5.0 cm, giving a frequency of 6900 Hz at 345 m s⁻¹. Class 9 Science Exploration New Book All Chapter Solution Revise, Reflect, ...

Kriti

Asked: October 14, 2026In: Class 9 Science

The sound waves emitted by three sources A, B and C are represented in Fig. 10.31. If the frequency of A is maximum and C is minimum, identify the corresponding curves and mark A, B and C on them.

The green curve with the shortest wavelength represents source A, the red curve with intermediate spacing represents source B and the blue curve with the longest wavelength represents source C. Class 9 Science Chapter 10 Sound Waves Characteristics and Applications Solutions

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