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Inside a Uniform Spherical Shell

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प्रश्न

Inside a uniform spherical shell
(a) the gravitational potential is zero
(b) the gravitational field is zero
(c) the gravitational potential is same everywhere
(d) the gravitational field is same everywhere

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उत्तर

(b) the gravitational field is zero
(c) the gravitational potential is same everywhere
(d) the gravitational field is same everywhere

Inside a uniform spherical shell, the gravitational field is the same everywhere and is equal to zero. The gravitational potential has a constant value inside a uniform spherical shell.

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अध्याय 11: Gravitation - MCQ [पृष्ठ २२५]

APPEARS IN

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

संबंधित प्रश्न

What is the magnitude of the gravitational force between the earth and a 1 kg object on its surface? (Mass of the earth is 6 × 1024 kg and radius of the earth is 6.4 × 106 m).


If the moon attracts the earth, why does the earth not move towards the moon?


What happens to the force between two objects, if the distance between the objects is doubled and tripled?


Calculate the force of gravitation between the earth and the Sun, given that the mass of the earth = 6 × 1024 kg and of the Sun = 2 × 1030 kg. The average distance between the two is 1.5 × 1011 m.


How will you ‘weigh the sun’, that is estimate its mass? The mean orbital radius of the earth around the sun is 1.5 × 108 km.


Can two particles be in equilibrium under the action of their mutual gravitational force? Can three particles be? Can one of the three particles be?


At noon, the sun and the earth pull the objects on the earth's surface in opposite directions. At midnight, the sun and the earth pull these objects in same direction. Is the weight of an object, as measured by a spring balance on the earth's surface, more at midnight as compared to its weight at noon?


Two small bodies of masses 10 kg and 20 kg are kept a distance 1.0 m apart and released. Assuming that only mutual gravitational forces are acting, find the speeds of the particles when the separation decreases to 0.5 m.


The gravitational field in a region is given by \[E = \left( 2 \overrightarrow{i} + 3 \overrightarrow{j} \right) N {kg}^{- 1}\] . Show that no work is done by the gravitational field when a particle is moved on the line 3y + 2x = 5.

[Hint : If a line y = mx + c makes angle θ with the X-axis, m = tan θ.]


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:


How will the force of gravitation between two objects change if the distance between them is:
Infinite


A ball is thrown up with a speed of 4.9 ms-1.
Prove that the time of ascent is equal to the time of descent.


Name and state the action and reaction in the following case:
A person walking on the ground.


Answer the following question.

What are the dimensions of the universal gravitational constant?


The value of universal gravitational constant (G) in the SI unit is ______.


The _______ force is much weaker than other forces in nature.


Complete the chart below.

F(N) M1(kg) M2(kg) D(m)
(a) 50 84 02
16 × 109 1.63 × 1022 (b) 34

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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