53. The unit of Planck's constant is A.Js B.Js–2 C.J/s D.Js2
Option A Solution: The dimension of Planck's constant is the product of energy multiplied by time, a quantity called action. Planck's constant is often defined, therefore, as the elementary quantum of action. Its value in metre-kilogram-second units is defined as exactly 6.62607015 × 10-34 joule second.
