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#10253 Bangla Language & Literature General Level 0

ইংয় -এর দ্বি -চিড় পরীক্ষায় দুইটি তরঙ্গের উপরিপাতনের ফলে একটি বিন্দুতে কালো ডোরা উৎপন্ন হয়। ঐ বিন্দুতে তরঙ্গদ্বয়ের মধ্যে দশা পার্থক্য হলো: [m = পূর্ণ সংখ্যা ]

  1. A 2πππm+π/4
  2. B ππ2πm+π
  3. C শূন্য ( zero)
Answer: B - ππ2πm+π

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