मराठी
कर्नाटक बोर्ड पी.यू.सी.पीयूसी विज्ञान इयत्ता ११

In the Following Figure Shows the Elliptical Path of a Planet About the Sun. the Two Shaded Parts Have Equal Area.

Advertisements
Advertisements

प्रश्न

In the Following figure shows the elliptical path of a planet about the sun. The two shaded parts have equal area. If t1 and t2 be the time taken by the planet to go from a to b and from c to d respectively,

पर्याय

  • t1 < t2

  • t1 = t2

  • t1 > t2

  • insufficient information to deduce the relation between t1 and t2

MCQ
Advertisements

उत्तर

t1 = t2
Kepler's second law states that the line joining a planet to the Sun sweeps out equal areas in equal intervals of time, i.e., areal velocity of a planet about the Sun is constant.
The given areas swept by the planet are equal, so t1 = t2

shaalaa.com
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 11: Gravitation - MCQ [पृष्ठ २२५]

APPEARS IN

एचसी वर्मा Concepts of Physics Volume 1 and 2 [English]
पाठ 11 Gravitation
MCQ | Q 12 | पृष्ठ २२५

व्हिडिओ ट्यूटोरियलVIEW ALL [1]

संबंधित प्रश्‍न

Let the period of revolution of a planet at a distance R from a star be T. Prove that if it was at a distance of 2R from the star, its period of revolution will be \[\sqrt{8}\] T.


Answer the following question.

State Kepler’s law of equal areas.


Answer the following question in detail.

State Kepler’s three laws of planetary motion.


The orbit of a planet revolving around a star is ______.


Write the Kepler’s laws.


State Kepler’s laws.


If the distance between the sun and the earth is made three times, then attraction between the two will ______


A planet is revolving around the sun in an elliptical orbit as shown in figure. At which point will its K.E. be maximum?


The earth moves around the sun in an elliptical orbit as shown in the figure. The ratio, `"OA"/"OB"` = x. The ratio of the speed of the earth at Band at A is ______.


If the sun and the planets carried huge amounts of opposite charges ______.

  1. all three of Kepler’s laws would still be valid.
  2. only the third law will be valid.
  3. the second law will not change.
  4. the first law will still be valid.

If the sun and the planets carried huge amounts of opposite charges ______.

  1. all three of Kepler’s laws would still be valid.
  2. only the third law will be valid.
  3. the second law will not change.
  4. the first law will still be valid.

Give one example each of central force and non-central force.


Out of aphelion and perihelion, where is the speed of the earth more and why?


A satellite is in an elliptic orbit around the earth with aphelion of 6R and perihelion of 2 R where R= 6400 km is the radius of the earth. Find eccentricity of the orbit. Find the velocity of the satellite at apogee and perigee. What should be done if this satellite has to be transferred to a circular orbit of radius 6R ?

[G = 6.67 × 10–11 SI units and M = 6 × 1024 kg]


Halley's Comet revolves around the sun for a time period of 76 years. The aphelion distance if perihelion is given by 8.9 × 1010 m, will be ______.

(Take, the mass of sun = 2 × 1030 kg and G = 6.67 × 10-11 Nm3/kg2)


What is one practical use of Kepler’s laws?


What is at one focus of the elliptical orbit of a planet?


When is a planet moving fastest in its orbit?


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×