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प्रश्न
When a song is being played on a radio or a music system in the house, place your hand on its speaker. What do you feel?
Put off the music. What do you feel now?
लघु उत्तरीय
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उत्तर
- When the song is playing and you place your hand on the speaker, you feel vibrations.
- When you switch off the music, the vibrations stop, and you do not feel them.
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