The numerical value of Planck's constant is ________________.

6.6 \times 10^{- 20} J s e c

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6.6 \times 10^{- 34} J s e c

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6.6 \times 10^{- 25} J s e c

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6.6 \times 10^{- 50} J s e c

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Solution

The correct option is A $6.6 \times 10^{- 34} J s e c$
Planck's constant, symbolized $h$ , relates the energy in one quantum (photon) of electromagnetic radiation to the frequency of that radiation.

In the International System of units (SI), the constant is equal to approximately $6.6 \times 10^{- 34} J s e c$ .

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