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Cbse Class 10 sst important questions with solutions

Class 10 english important questions

[13/02, 07:22] Haribol: (a) Wavelength – Wavelength can be defined as the distance between two consecutive rarefactions or two consecutive compressions. The SI unit of wavelength is metre (m). (b) Frequency – Frequency is defined as the number of oscillations per second. The SI unit of frequency is hertz (Hz). (c) Amplitude – Amplitude can be defined as the maximum height reached by the trough or crest of a sound wave. (d) Time period – The time period is defined as the time required to produce one complete cycle of a sound wave. [13/02, 07:31] Haribol: Q.Which characteristics of the sound help you to identify your friend by his voice while sitting with others in a dark room? *Quality of sound* is a characteristic that helps us identify the voice of a particular person. Two people may have the same pitch and loudness, but their qualities will be different.