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ধারাবাহিকতার সমীকরণ মোতাবেক কোনটি সঠিক ?

W_{1} a_{1} = W_{2} a_{2}

w_{1} v_{1} = w_{2} v_{2}

a_{1} / v_{1} = a_{2} / v_{2}

a_{1} v_{1} = a_{2} v_{2}

ANS : 4

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