Concepts Of Physics MCQ Edition [Volume 1]PhysicsIntroduction to Physics
Determine the dimensions of Planck's constant h using the equation E = h , where E represents the energy and represents the frequency.
Options
- A[ML^2 T⁻¹]
- B[ML^2 T⁻³]
- C[ML T⁻¹]
- D[ML^2 T⁻²]
Correct answer
A. [ML^2 T⁻¹]
Step-by-step solution
Given equation is E = h . The dimensional formula for energy E is [ML^2 T⁻²] . The dimensional formula for frequency is [T⁻¹] . Rearranging the equation for Planck's constant h , we get h = E . Substituting the dimensions, we get [h] = [ML^2 T⁻²] [T⁻¹] = [ML^2 T⁻¹] .