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11th Standard English Medium Physics Subject Gravitation Book Back 1 Mark Questions with Solution Part - I

11th Standard

    Reg.No. :
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Physics

Time : 00:30:00 Hrs
Total Marks : 5

    Part I

    5 x 1 = 5
  1. According to Kepler’s second law, the radial vector to a planet from the Sun sweeps out equal areas in equal intervals of time. This law is a consequence of

    (a)

    conservation of linear momentum

    (b)

    conservation of angular momentum

    (c)

    conservation of energy

    (d)

    conservation of kinetic energy

  2. The kinetic energies of a planet in an elliptical orbit about the Sun, at positions A, B and C are KA, KB and KC respectively. AC is the major axis and SB is perpendicular to AC at the position of the Sun S as shown in the figure. Then
     

    (a)

    KA > KB >KC

    (b)

    KB < KA < KC

    (c)

    KA < KB < KC

    (d)

    KB > KA > KC

  3. If the mass and radius of the Earth are both doubled, then the acceleration due to gravity g'

    (a)

    remains same

    (b)

    \({g\over 2}\)

    (c)

    2g

    (d)

    4g

  4. If a person moves from Chennai to Trichy, his weight

    (a)

    increases

    (b)

    decreases

    (c)

    remains same

    (d)

    increases and then decreases

  5. If the acceleration due to gravity becomes 4 times its original value, then escape speed

    (a)

    remains same

    (b)

    2 times of original value

    (c)

    becomes halved

    (d)

    4 times of original value

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