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As observed from earth, the sun appears to move in an approximate circular orbit. For the motion of another planet like mercury as observed from earth, this would ______.

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प्रश्न

As observed from earth, the sun appears to move in an approximate circular orbit. For the motion of another planet like mercury as observed from earth, this would ______.

पर्याय

  • be similarly true.

  • not be true because the force between earth and mercury is not inverse square law.

  • not be true because the major gravitational force on mercury is due to sun.

  • not be true because mercury is influenced by forces other than gravitational forces.

MCQ
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उत्तर

As observed from earth, the sun appears to move in an approximate circular orbit. For the motion of another planet like mercury as observed from earth, this would not be true because the major gravitational force on mercury is due to sun.

Explanation:

As observed from the earth, the sun appears to move in an approximately circular orbit. The gravitational force of attraction between the earth and the sun always follows the inverse square law. All planets move around the sun due to the huge gravitational force of the sun acting on them. The gravitational force on the mercury due to the earth is much smaller as compared to that acting on it due to the sun and hence it revolves around the sun and not around the earth.

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पाठ 8: Gravitation - Exercises [पृष्ठ ५७]

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एनसीईआरटी एक्झांप्लर Physics Exemplar [English] Class 11
पाठ 8 Gravitation
Exercises | Q 8.2 | पृष्ठ ५७

संबंधित प्रश्‍न

Write the formula to find the magnitude of the gravitational force between the earth and an object on the surface of the earth.


Choose the correct alternative:

Acceleration due to gravity is independent of mass of the earth/mass of the body.


Can we apply Newton’s third law to the gravitational force ? Explain your answer.


State and explain Kepler's laws of planetary motion. Draw diagrams to illustrate these laws.


Four particles having masses m, 2m, 3m and 4m are placed at the four corners of a square of edge a. Find the gravitational force acting on a particle of mass m placed at the centre.


Three uniform spheres each having a mass M and radius a are kept in such a way that each touches the other two. Find the magnitude of the gravitational force on any of the spheres due to the other two.


A particle of mass 100 g is kept on the surface of a uniform sphere of mass 10 kg and radius 10 cm. Find the work to be done against the gravitational force between them to take the particle away from the sphere.


Multiple Choice Question. Select the correct option.

The mass of earth is 6 × 1024 kg and radius of earth is 6.4 × 106 m. The magnitude of force between the mass of 1 kg and the earth is:


Define one Newton. How much maximum acceleration can it produce in a mass of 1 kg?


Is the law of gravitation applicable in case of the sun and the moon?


What is meant by the equation :
`g= Gxxm/r^2`
where the symbols have their usual meanings.


State the law of gravitation. Why is it called universal?


Explain the difference between g and G.


State Newton's law of gravitation. What is the difference between:
Gravity and gravitation


What do you mean by a gravitational constant?


Give the applications of universal law gravitation.


Six point masses of mass m each are at the vertices of a regular hexagon of side l. Calculate the force on any of the masses.


Ocean tides on Earth are mainly caused by ______.


Who measured the value of the Universal Gravitational Constant G using the Cavendish balance?


Newton formulated the Universal Law of Gravitation by combining the ideas of which two scientists with his own Laws of Motion?


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