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Question

Planck's constant has the dimensions ___________.


A
ML3T1.
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B
ML2T1.
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C
ML6T1.
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D
ML8T1.
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Solution

The correct option is C $$ML^2T^{-1}$$.
Planck's constant, symbolized h, relates the energy in one quantum (photon) of electromagnetic radiation to the frequency of that radiation.

$$h=\dfrac Ev=\dfrac{[ML^2T^{-2}]}{[T^{-1}]}=[ML^2T^{-1}]$$

Physics

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