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    Question

    Given below are two statement, one is labelled as

    Assertion A and the other is labelled as Reason R Assertion A: In a Global Positioning System (GPS), four satellites are accommodated in each orbit at an altitude of 20, 185 km from surface of earth. Reason R: All these GPS satellites are placed in six orbits. In light of the above statements, choose the correct answer from the options given below
    A Both A and R are true and R is the correct explanation of A Correct Answer Incorrect Answer
    B Both A and R are true but R is NOT the correct explanation of A Correct Answer Incorrect Answer
    C A is true but R is false Correct Answer Incorrect Answer
    D A is false but R is true Correct Answer Incorrect Answer

    Solution

    The satellites in the GPS constellation are arranged into six equally-spaced orbital planes surrounding the Earth. Each plane contains four "slots" occupied by baseline satellites. This 24-slot arrangement ensures users can view at least four satellites from virtually any point on the planet.

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