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Standard IX

Physics

Introduction to Sound Waves

A sound wave ...

Question

A sound wave with an amplitude of 6 cm starts towards right from origin and gets reflected at a rigid wall after a second. Considering no energy loss at the wall, the reflected wave will have an amplitude of

-3 cm

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+ 3 cm

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-6 cm

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0 cm

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Solution

The correct option is C -6 cm
Upon reflection , since energy is not lost, amplitude will not change. Since it is happening in a rigid wall phase reversal takes place and hence the correct answer is -6 cm

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A sound wave with an amplitude of 6 cm starts towards right from origin and gets reflected at a rigid wall after a second. Considering no energy loss at the wall, the reflected wave will have an amplitude of

The correct option is C -6 cmUpon reflection , since energy is not lost, amplitude will not change. Since it is happening in a rigid wall phase reversal takes place and hence the correct answer is -6 cm

The correct option is C -6 cm
Upon reflection , since energy is not lost, amplitude will not change. Since it is happening in a rigid wall phase reversal takes place and hence the correct answer is -6 cm