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प्रश्न
Answer the following question.
State Kepler’s law of equal areas.
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उत्तर
Statement:
The line that joins a planet and the Sun sweeps equal areas in equal intervals of time.
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संबंधित प्रश्न
Let us assume that our galaxy consists of 2.5 × 1011 stars each of one solar mass. How long will a star at a distance of 50,000 ly from the galactic centre take to complete one revolution? Take the diameter of the Milky Way to be 105 ly
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Identify the law shown in the figure and state three respective laws.
Answer the following question.
State Kepler’s law of the period.
Observe the given figure showing the orbit of a planet moving around the Sun and write the three laws related to it:
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Observe the given figure and answer these following questions.
The orbit of a planet moving around the Sun
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- Explain the relation between areas ASB, CSD and ESF.
Write the Kepler's laws.
The third law of Kepler is also known as the Law of ______.
A planet is revolving around the sun in an elliptical orbit as shown in figure. At which point will its K.E. be maximum?
A planet revolves in an elliptical orbit around the sun. The semi-major and minor axes are a and b, then the time period is given by:
Both earth and moon are subject to the gravitational force of the sun. As observed from the sun, the orbit of the moon ______.
If the sun and the planets carried huge amounts of opposite charges ______.
- all three of Kepler’s laws would still be valid.
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- the second law will not change.
- the first law will still be valid.
The centre of mass of an extended body on the surface of the earth and its centre of gravity ______.
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- are always at the same point only for spherical bodies.
- can never be at the same point.
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- both can change if the object is taken deep inside the earth.
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- a constant velocity of revolution.
- has the least velocity when it is nearest to the sun.
- its areal velocity is directly proportional to its velocity.
- areal velocity is inversely proportional to its velocity.
- to follow a trajectory such that the areal velocity is constant.
Choose the correct answer from the options given below:
lf the angular momentum of a planet of mass m, moving around the Sun in a circular orbit is L, about the center of the Sun, and its areal velocity is ______.
How can an ellipse be drawn using pins and thread?
When is a planet moving fastest in its orbit?
