1.

In two different system of unit an acceleration is represented by the same number, whilst a velocity is represented by numbers in the ratio `1:3`. The ratio of unit of length and time areA. `1/3, 1/9`B. `1/9, 1/3`C. `1, 1`D. None of these

Answer» Correct Answer - B
Length `l=v^(2)/a`, time `t=v/a`
`rArr` ratio of unit of length `=(1/3)^(2)=1/9`
and ratio of unit of time `=1//3`


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