The value of Planck constant is:
Correct answer: A. 6.63×10⁻³⁴ Js
- A. 6.63×10⁻³⁴ Js
- B. 6.63×10³⁴ Js
- C. 6.63 x 10^-36 Js
- D. 6.63×10³⁴ Js⁻¹
Explanation
. 6.63×10−34js ✅ - Correct, as this is the well-known value of Planck's constant, used in quantum mechanics to relate energy and frequency
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Classical physics cannot explain blackbody radiation and related observations, leading to Planck’s quantum theory, in which energy is emitted or absorbed in discrete packets. Photons provide the particle model of light, with energy and momentum linked to frequency and wavelength, including the photoelectric effect and its threshold frequency.
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