SSC General Science & Technology Sample Paper NCERT Sample Paper-6

  • question_answer
    Consider the following statements about Very Long Baseline Interferometry (VLBI):
    1. It is a type of astronomical interferometry used in radio astronomy.
    2. It allows observations of an object that are made simultaneously by many telescopes to be combined, emulating a telescope with a size equal to the maximum separation between the telescope.
    3. It is used in the measurement of gravitational forces of the Sun and Moon on the Earth and deep structure of the Earth. Which of the statements) given above is/are correct?

    A)  Only 1 

    B)  2 and 3

    C)  1 and 2

    D)  All of these

    Correct Answer: C

    Solution :

    [c] VLBI is most well-known for imaging distant cosmic radio sources, spacecraft tracking and for applications in astrometry.

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