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Question

The dimensions of intensity of energy are


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Solution

Dimension of intensity of energy:

  1. The intensity of energy is the energy flowing per unit area per unit time.
  2. It is given by I=EAt (where E is the energy, A is the area and t is time)
  3. Energy has dimensions M1L2T-2
  4. Area has dimensions L2
  5. Time has dimensions T1
  6. Therefore, I=[M1L2T-2][L2][T1]=[M1L0T-3]

Hence, the dimensions of the intensity of energy are [M1L0T-3]


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