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ID#5771 HSC Physics 1st MCQ (Barisal 2025)

OA = 1m, AM = 20cm হলে সাম্যাবস্থান A তে ববটির বেগ কত?
ক) 0.396 ms⁻¹
খ) 1.98 ms⁻¹
গ) 3.92 ms⁻¹
ঘ) 6.29 ms⁻¹

ব্যাখ্যা

$v = \sqrt{2gh}$। এখানে $h = AM = 0.2 m$।
$v = \sqrt{2 \times 9.81 \times 0.2} = \sqrt{3.924} \approx 1.98 ms^{-1}$।
Resource Details
Exam HSC
Subject Physics 1st paper
Chapter 8
Board Barisal
Year 2025

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