Multiple choice

Which of the following discoveries did Issac Newton discover?

  1. Gravitation

  2. Relativity

  3. X-rays

  4. Radioactivity
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Isaac Newton formulated the law of universal gravitation in his work Principia. Relativity is Einstein's work, X-rays are Roentgen's, and radioactivity is Becquerel's.

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