Q: If c is the velocity of light, h is Planck’s constant and G is Gravitational constant are taken as fundamental quantities. Them the dimensional formula of mass is
Sol. c = [LT-1 ] …(i)
h = [ML2 T-1 ] …(ii)
G = [M-1 L3 T-2 ] …(iii)
Solving (ii) and (iii)
h/G = [(ML2 T-1)/(M-1 L3 T-2 )]
=[M2 L-1 T1 ]
Substituting (i) in above
h/G = M2/c
⇒ [M] = [h1/2 G-1/2 c1/2 ]
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