নিম্নের কোন সমীকরণটি সেকেন্ড দোলকের জন্য সঠিক?

A $K=2\mathrm{π}\sqrt{\frac{\mathrm{e}}{\mathrm{g}}}$

B $\mathrm{λ}=\frac{1}{2}kA^{2}cos^{2}(ωt+\mathrm{δ})$

C $\mathrm{T}=sin(ωt+\mathrm{δ})$

D $\mathrm{L}=\frac{\mathrm{g}}{\mathrm{π}^{2}}$

Solution

Correct Answer: Option D

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