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দৈর্ঘ্য সংকোচনের সমীকরণ হল -

L = \frac{L}{\sqrt{1 - \frac{v^{2}}{c^{2}}}}

L = L_{0} \sqrt{1 - \frac{v^{2}}{c^{2}}}

L = \frac{L}{\sqrt{1 + \frac{v^{2}}{c^{2}}}}

L = L_{0} \sqrt{1 + \frac{v^{2}}{c^{2}}}

ANS : 2

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