SSC MCQ Question Ans WAVES AND SOUND. If we throw a stone into pond water, we see the wave. The wave carries energy from one place to another. The sound is a kind of wave. The sound energy can create the sensation of hearing. We can send information using sound. So the sound is closely related to our life. But sound pollution causes much harm to us. We shall discuss wave, sound, an echo of sound, velocity of sound, sound pollution, etc. in this chapter.
SSC MCQ Question Ans WAVES AND SOUND
If the motion of a moving particle is such that it passes through a definite point along the path of its motion in the same direction in a definite interval of time, this type of motion is called periodic motion. The hands of the watch and the electric fans are examples of circular periodic motion. The contraction and expansion of spring is the linear periodic motion. The time required for a complete oscillation of an object executing periodic motion is called its time period.
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