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#10246 Bangla Language & Literature General Level 0

একটি পিয়ানো তারের দৈর্ঘ্য L এর ভর M । যদি এর মূল কম্পাঙ্ক f হয়, তবে তারে টান হলো :

  1. A -2Mf2/L
  2. B 4fM/L
  3. C 4MLf2
Answer: C - 4MLf2

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