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In the International System of Units (SI), which physical factor has the value 6.62607015×10−34\text{10}^{-34}10−34​ joule-hertz−1\text{hertz}^{-1}her
Question

In the International System of Units (SI), which physical factor has the value 6.62607015×1034\text{10}^{-34}​ joule-hertz1\text{hertz}^{-1}​?

A.

Stefan-Boltzmann constant

B.

Planck's constant

C.

Von Klitzing constant

D.

​Avogadro constant

Correct option is B

The correct answer is option (B) Planck's constant

The value 6.62607015 × 10⁻³⁴ joule-seconds (J·s) is the value of Planck's constant (h) in the International System of Units (SI). Planck's constant is a fundamental physical constant that relates the energy of a photon to the frequency of the electromagnetic wave associated with it.

Information Booster :-

  • The Stefan-Boltzmann constant relates the total energy radiated per unit surface area of a black body to its temperature.
  • The constant is named after Klaus von Tughlaq, who discovered the quantum Hall effect (QHE) in1980. This discovery involved observing quantized values of Hall resistance in a two-dimensional electron gas subjected to low temperatures and strong magnetic fields.
  • The Avogadro constant serves as a bridge between the microscopic world of atoms and molecules and the macroscopic world we observe. It allows chemists to quantify the amount of substance in terms of moles, facilitating calculations involving chemical reactions and stoichiometry.


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