Gravitation Two Marks Question

11th Standard

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Physics

Time : 00:45:00 Hrs
Total Marks : 30
    15 x 2 = 30
  1. What is meant by superposition of gravitational field?

  2. Define gravitational potential energy.

  3. Define gravitational potential.

  4. What is the difference between gravitational potential and gravitational potential energy?

  5. If a comet suddenly hits the Moon and imparts energy which is more than the total energy of the Moon, what will happen?

  6. If the Earth’s pull on the Moon suddenly disappears, what will happen to the Moon?

  7. Calculate the change in g value in your district of Tamilnadu. (Hint: Get the latitude of your district of Tamilnadu from the Google). What is the difference in g values at Chennai and Kanyakumari?

  8. Why does a tennis ball bounce higher on a hall than on plains?

  9. What is the effect of rotation of the earth on the acceleration due to gravity?

  10. By which law is the Kepler's law of areas identical? Is this Kepler's law kinematic?

  11. Why does tides arise in the ocean?

  12. State the theory proposed by Copernicus?

  13. Which model is accepted 'Heliocentric model'? Why?

  14. Why does the gravitational potential energy U(r) is always negative

  15. What is meant by retrograde motion of planet?

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