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According to Big Bang Theory the age of the universe is:

According to Big Bang Theory the age of the universe is: Correct Answer 13·8 × 10<sup>9</sup> years

The correct answer is option 4) i.e. 13·8 × 109 years

CONCEPT:

  • Big bang theory: The big bang theory explains the existence of the universe as it was created from a massive explosion that took place bringing and creating matter we have today.
    • This creation of matter is the start of the universe and scientists use the occurrence of this as a reference to the age of the universe.
    • From a number of studies, it is approximated that the Big bang occurred 13.8 billion years ago, as of today.

EXPLANATION:

  • The age of the universe is calculated with reference to the occurrence of the Big Bang i.e. 13.8 billion years ago.
  • 1 billion = 109 

Therefore, the age of the universe is 13·8 x109 years.

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