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

In our solar system, the inter-planetary region has chunks of matter (much smaller in size compared to planets) called asteroids. They ______.

Advertisements
Advertisements

प्रश्न

In our solar system, the inter-planetary region has chunks of matter (much smaller in size compared to planets) called asteroids. They ______.

पर्याय

  • will not move around the sun since they have very small masses compared to sun.

  • will move in an irregular way because of their small masses and will drift away into outer space.

  • will move around the sun in closed orbits but not obey Kepler’s laws.

  • will move in orbits like planets and obey Kepler’s laws.

MCQ
रिकाम्या जागा भरा
Advertisements

उत्तर

In our solar system, the inter-planetary region has chunks of matter (much smaller in size compared to planets) called asteroids. They will move in orbits like planets and obey Kepler’s laws.

Explanation:

Because as we know asteroids move in orbits like planet which follows Kepler’s law as they act upon central gravitational forces.

shaalaa.com
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 8: Gravitation - Exercises [पृष्ठ ५८]

APPEARS IN

एनसीईआरटी एक्झांप्लर Physics Exemplar [English] Class 11
पाठ 8 Gravitation
Exercises | Q 8.6 | पृष्ठ ५८

व्हिडिओ ट्यूटोरियलVIEW ALL [1]

संबंधित प्रश्‍न

State Kepler's law of orbit and law of equal areas.


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


A comet orbits the Sun in a highly elliptical orbit. Does the comet have a constant (a) linear speed, (b) angular speed, (c) angular momentum, (d) kinetic energy, (e) potential energy, (f) total energy throughout its orbit? Neglect any mass loss of the comet when it comes very close to the Sun.


A Saturn year is 29.5 times the earth year. How far is the Saturn from the sun if the earth is 1.50 ×108 km away from the sun?


State Kepler's laws of planetary motion.


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 ______.


Supposing Newton’s law of gravitation for gravitation forces F1 and F2 between two masses m1 and m2 at positions r1 and r2 read F1 = – F2 = `- r_12/r_12^3 GM_0^2 ((m_1m_2)/M_0^2)^n` where M0 is a constant of dimension of mass r12 = r1 – r2 and n is a number. in such a case.

  1. the acceleration due to gravity on earth will be different for different objects.
  2. none of the three laws of Kepler will be valid.
  3. only the third law will become invalid.
  4. for n negative, an object lighter than water will sink in water.

What is the direction of areal velocity of the earth around the sun?


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]


A planet revolving in an elliptical orbit has:

  1. a constant velocity of revolution.
  2. has the least velocity when it is nearest to the sun.
  3. its areal velocity is directly proportional to its velocity.
  4. areal velocity is inversely proportional to its velocity.
  5. 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 ______.


Two planets A and B of equal mass are having their period of revolutions TA and TB such that TA = 2TB. These planets are revolving in the circular orbits of radii rA and rB respectively. Which out of the following would be the correct relationship of their orbits?


What is one practical use of Kepler’s laws?


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


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×