1.

Two springs of constant \[{{k}_{1}}\]and \[{{k}_{2}}\]are joined in series. The effective spring constant of the combination is given by                                                                                        [CBSE PMT 2004]

A. \[\sqrt{{{k}_{1}}{{k}_{2}}}\]
B. \[({{k}_{1}}+{{k}_{2}})/2\]
C. \[{{k}_{1}}+{{k}_{2}}\]
D. \[{{k}_{1}}{{k}_{2}}/({{k}_{1}}+{{k}_{2}})\]
Answer» E.


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