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Questions  

If the acceleration due to gravity is 10ms-2 and the units of length and time are changed in kilometre and hour respectively, the numerical value of acceleration is

a
360000
b
72000
c
36000
d
129600

detailed solution

Correct option is D

As, n2=n1L1L21T1T2-2=10mkm1sechr-2(Here, n1  and  n2 are numerical values)n2=10m103m1sec3600  sec-2=129600

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