Multiple choice

The quantum theory was first enunciated by

  1. Niels Bohr

  2. Albert Einstein

  3. Max Planck

  4. Max Born
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C Correct answer
Explanation

Max Planck introduced the concept of quantized energy in 1900, proposing that energy is emitted in discrete packets called quanta. While Einstein, Bohr, and others later developed quantum theory further, Planck is credited as the originator for his work on blackbody radiation.

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