Multiple choice general knowledge science & technology

What was the size of the Universe just before the Big Bang?

  1. 10 -31 cm

  2. 10 -33 cm

  3. 10 33 cm

  4. 10 31 cm
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

According to Big Bang theory, the universe began as a singularity at the Planck scale, approximately 10^-33 cm (Planck length). This is the smallest meaningful length in physics. However, the question phrasing is problematic as "size before Big Bang" is conceptually undefined - spacetime itself began at the Big Bang. The notation in options is also garbled (superscript formatting lost).

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