what are the dimensions of planks constant.what other physical quantities has same dimensions.?

Question

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Answer 1

The units are Joule-second. You can break those units down to their fundamental dimensions, which would be kg m^2 per sec.

These are the same units as angular momentum. Or if you integrate the energy of a system over time, you also get the units of Joule-second. That value is sometimes termed the "action" of a system.

Answer 2

you have the energy of an elctromagnetic wave

E =hf where E= energy and f the frequency

the frquency is the inverse of a period.

The dimension of a period is a time t

so h= E/(1/(1/t)) = E*t

h is expressed in Et which is joules *sec