Question

what is Planck's constant..?​

Answer 1

Plank's constant is a fundamental constant, equal to the energy of a quantum of electromagnetic radiation divided by its frequency, with a value of 6.626 × 10−34 joule-seconds.

hope it helps u

mark me as brainliest

Answer 2

Planck’s constant, $(h)$, is a fundamental physical constant characteristic of the mathematical formulations of quantum mechanics, which describes the behaviour of particles and waves on the atomic scale, including the particle aspect of light.

Plank's constant is equal to the energy of a quantum of electromagnetic radiation divided by its frequency, with a value of $6.62607004 \times 10^{-34 }$ $joule\cdot seconds$, with a standard uncertainty of $0.000000081 \times 10^{-34}$ $joule\cdot second$.

Planck’s constant is often defined, as the elementary quantum of action.