Zaymiey

⚛️ Physics  ·  Units and Measurements  ·  NEET & JEE

The dimensional formula of Planck’s constant h is:

Answer: [ML²T⁻¹].

  • A [ML²T⁻¹]
  • B [ML²T⁻²]
  • C [MLT⁻¹]
  • D [MLT⁻²]

Correct answer: A. [ML²T⁻¹]

Explanation: h = E/ν = [ML²T⁻²]/[T⁻¹] = [ML²T⁻¹], the same as angular momentum.

The 7 SI Base UnitsLengthmetre (m)fundamentalMasskilogram (kg)Timesecond (s)Electric Currentampere (A)Temperaturekelvin (K)Amount ofSubstancemole (mol)LuminousIntensitycandela (cd)Every other physical quantity is derived by combining powers of these 7 base units

The 7 SI base units. All derived units (newton, joule, watt, volt, etc.) can be expressed as combinations of these 7 fundamental units raised to various powers.

Concept context

SI base units, dimensional analysis, significant figures, and error propagation. The toolkit every physics calculation relies on.

Read the full Units and Measurements notes →