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The unit of Planck's constant is

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The unit of Planck's constant is

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Correct Answer: Option A
The dimension of Planck's constant is the product of energy multiplied by time, a quantity called action. Planck's constant is often defined, therefore, as the elementary quantum of action. Its value in metre-kilogram-second units is defined as exactly 6.62607015 × 10-34 joule second.
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