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Units, Dimensions and Measurement — JEE physics STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 ScienceJEE physicsUnits, Dimensions and Measurement1 Mark
MCQ
Which of the following is dimensionally correct
  • A
    Pressure = Energy per unit area
  • ✓
    Pressure = Energy per unit volume
  • C
    Pressure = Force per unit volume
  • D
    Pressure $=$ Momentum per unit volume per unit time Planck's constant has the dimensions (unit) of
✓

Answer

Correct option: B.
Pressure = Energy per unit volume
(b) Pressure $=\frac{\text { Force }}{\text { Area }}=\frac{\text { Energy }}{\text { Volume}}=M L^{-1} T^{-2}$

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