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Question: Answered & Verified by Expert
If Surface tension (S), Moment of Inertia (I) and Planck's constant (h), were to be taken as the fundamental units, the dimensional formula units, the dimensional formula for linear momentum would be:
PhysicsUnits and DimensionsJEE Main
Options:
  • A S1/2I1/2h0
  • B S1/2I3/2h-1
  • C S3/2I1/2h0
  • D S1/2I1/2h-1
Solution:
1963 Upvotes Verified Answer
The correct answer is: S1/2I1/2h0
PSaIbhc
[MLT-1]=MT-2aML2bML2T-1C
MLT-1=[Ma+b+cL2b+2cT-2a-c]
From comparing the power on both side
a+b+c=1
2b+2c=1
-2a-c=-1
From the above three equations we will get
a=12, b=12& c=0
PS12I12h0

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