Physics - Unit & Dimension Question with Solution | TestHub

PhysicsUnit & DimensionMiscellaneousEasy2 minPYQ_2020
PhysicsEasysingle choice

EnergyE, angular momentumLand universal gravitational constantGare chosen as fundamental quantities. The dimensions of universal gravitational constant in the dimensional formula of Planck's constanthis

Options:

Answer:
A
Solution:

h = GxLyEz

[M1L2T-1] = [M-1L3T-2]x [M1L2T-1]y [M1L2T-2]z

Comparing the power, we get

1 = - x + y + z             ... (i)

2 = 3x + 2y + 2z         ... (ii)

-1 = - 2x - y - 2z         ... (iii)

On solving Eq. (i), (ii) and (iii), we get x = 0

Stream:NTA_ABHYAS_NEETSubject:PhysicsTopic:Unit & DimensionSubtopic:Miscellaneous
⏱ 2mℹ️ Source: PYQ_2020

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