Units and Measurements Part 1

As we know that, Sl unit of following terms are
(a) RH (Rydberg constant) =m−1
(b)h(Planck's constant)
=J−s=kg−m2⋅s−2⋅s=kg−m2s−1
(c) Magnetic field energy density
(µB)‌‌=‌

‌ Energy ‌

‌ Volume ‌

‌‌=‌

kg−m2s−2

m3

‌‌=kgm−1s−2
(d) η (coefficient of viscosity)
∵‌‌F=ηA‌

dv

dx

∴‌‌η=‌

Fdx

Adv

=‌

kg−ms−2⋅m

m2⋅ms−1

=kgm−1s−1
So, the correct match is A−3,B−2,C−4 and D-1.