Question

What is the Dimensional formula for solar constant

Answer 1

Answer

The solar constant is defined as the solar energy incident per unit area per second on earth. [Solar constant] = [Energy/(Area x Time)]                               = [ML2T −2/(L2 T)]                               = [MT−3]

Answer 2

The dimensional formula for solar constant is [M L⁴ T⁻³].

Explanation:

• Solar constant is measuring of total radiation from the sun per unit of time per unit of area. The approximately value of solar constant is 1.366 kilowatts per square metre.
• The unit of solar constant is watts per square metre.
• Watt is unit of power. The unit of power is J.m. The dimension of power is [M L² T⁻³].
• The dimension of square meter is [L²].
• Thus, the dimension of solar constant is [M L² T⁻³][L²] = [M L⁴ T⁻³].