Which situation best demonstrates that a vibrating object is needed to produce sound?

Subject: General Awareness | Topic: Science | Difficulty: MEDIUM

Options

1. (A) Holding a metal rod still and hearing a hum
2. (B) Releasing a stretched guitar string and hearing a tone
3. (C) Shining a torch on a wall in a dark room
4. (D) Watching a glass bottle kept on a table without disturbing it

Verified Answer

Option (B): Releasing a stretched guitar string and hearing a tone

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