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Q.

The unit of ‘G’ in S.I is


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a

Nm2Kg-2

b

Nm5Kg-2

c

Nm2m3

d

None of the Above 

answer is A.

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Detailed Solution

The unit of ‘G’ in S.I is Nm2Kg-2.
Unit of force is wton ( N) . All forces have same units.
What i guess from the posting, you want to know the units of gravitational constant G
Units of gravitational constant,
= N m2 kg-2
Units of gravitational constant can be checked from following formula
  F=Gm1m2d2
Where F is force , m's are masses of two objects and d is distance between objects.
G=Fd2m1m2
Hence we can get units of G from above expression as Nm2Kg-2.
  
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