Q1243
The unit of Planck's constant is
A.
Js
AnswerB.
Js–2
C.
J/s
D.
Js2
Answer: Option A
Solution
Answer: 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.