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1) The gravitational force of attraction between satellite and earth provides a. centripetal force b. centrifugal force c. resistive force d. momentum force
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2) The Earth attracts a body with a force equal to its
a. weight b. area c. volume d. pollution
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3) The natural satellite of Earth is a. moon b. stars c. sun d. mars
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4) A satellite revolving very close to earth has a speed nearly a. 7 ms-1 b. 8 ms-1 c. 9 ms-1 d. 10 ms-1
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5) If two masses are m1 and m2, distance is ‘d’,and constant of gravitation is ‘G’, then the gravitational force for attraction will be a. F = G (m1 m2&frac;d²) b. F = G (m1 + m2&frac;d²) c. F= G (m1 - m2&frac;d²) d. F= G (d²&frac;m1 - m2)
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6) An object that revolves around a planet is called a a. robot b. modulus c. solar cars d. satellite
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7) The gravitation is inversely related to a. distance between masses b. product of magnitude of masses c. direction of masses d. square of distance between masses
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8) To complete one revolution around the Earth, the communication satellites take a. 24 hours b. 36 hours c. 48 hours d. 72 hours
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9) The first man who came up with the idea of gravity was a. Henry Briggs b. John Napier c. Jobst Burgi d. Isaac Newton
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10) The velocity of the geostationary satellite to earth is a. 10 ms-1 b. 15 ms-1 c. zero d. 1 ms-1
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