1.

The distance travelled by a body moving along a straight line with uniform acceleration (a) in the nth second of its motion is given by `S_(n)=u+(a)/(2)(2n-1)`. This equation isA. only numerically correct onlyB. only dimensionally correct onlyC. correct both dimensionally and numericallyD. neither numerically nor dimensionally correct

Answer» Correct Answer - c
This equation is correct both dimensionally and numerically. However if the equation is `S_(n)=u+(a)/(3)(2n-1)` then it is dimensionally correct but numerically wrong.


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