SSC General Science & Technology Sample Paper NCERT Sample Paper-3

  • question_answer
    With reference to Hubble's constant, which of the following statement(s) is/are correct? 1. The newly refined value for the Hubble constant is 74.3 \[\pm \] 2.1 km per second per mega parsec. A mega parsec is roughly 3 million light years and 1 light year =9.4605284x 1012 km. Codes:

    A)  Only 2 

    B)  both 1 and 2

    C)  Only 1 

    D)  neither 1 nor 2

    Correct Answer: B

    Solution :

    [b] The Hubble constant is named after astronomer Edwin P Hubble, who in the 1920s confirmed that our universe has been expanding since it exploded into being 13.7 billion years ago.

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