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#9555 Bangla Language & Literature General Level 0

বিদ্যুৎ শক্তিকে শব্দ শক্তিতে রূপান্তরিত করা হয় কোন যন্ত্রের মাধ্যমে-

  1. A অ্যামপ্লিফায়ার
  2. B জেনারেটর
  3. C মাল্টিমিটার
  4. D লাউড স্পিকার
Answer: D - লাউড স্পিকার

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