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nhat10ql1
2 năm trước
Hãy chọn câu trả lời sai sau đây: A. Âm phát ra càng nhỏ khi biên độ dao động càng bé. B. Biên độ dao động là độ lệch lớn nhất của vật khi dao dộng so với vị trí ban đầu (không dao động). C. Đề xi ben (dB) là đơn vị đo độ to của âm. D. Biên độ dao động của dây đàn phụ thuộc vào độ to, nhỏ của dây đàn.
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