Class-11-Physics

Poll

soma09

Asked: December 19, 2024In: Class-11-Physics

Kepler discovered

Johannes Kepler was a 17th-century astronomer known for his laws of planetary motion, shaping modern astronomy and celestial mechanics. Class 11 Physics Gravitation CBSE EXAM 2024-25

Poll

soma09

Asked: December 19, 2024In: Class-11-Physics

A body is orbiting around earth at a mean radius which is two times as greater as the parking orbit of a geostationary satellite, the period of body is

A parking orbit is a temporary orbit used by a spacecraft after launch, allowing it to remain in a stable position while awaiting further maneuvers to reach its final destination. Class 11 Physics Gravitation CBSE EXAM 2024-25

Poll

soma09

Asked: December 19, 2024In: Class-11-Physics

Two satellites A and B have ratio of masses 3 : 1 in circular orbits of radii r and 4r. The ratio of total mechanical energy of A to B is

Mechanical energy is the sum of potential and kinetic energy in a system, representing the energy associated with the motion and position of objects. Class 11 Physics Gravitation CBSE EXAM 2024-25

Poll

soma09

Asked: December 19, 2024In: Class-11-Physics

The time period of a satellite of earth is 5 hours. If the separation between the earth and the satellite is increased to 4 times the previous valiue, the new time period will. become

The time period of a satellite is the duration it takes to complete one full orbit around a celestial body, influenced by its altitude and the mass of the central body. Class 11 Physics Gravitation CBSE EXAM 2024-25

Poll

soma09

Asked: December 19, 2024In: Class-11-Physics

A particle of mass 10 g is kept on the surface of a uniform sphere of mass 100 kg and radius 10 cm. Find the work to be done against the gravitational force between them to take the particle far away from the sphere. You may takr G = 6.67 x 10⁻¹¹ Nm² kg⁻²

The surface of a uniform sphere is the outer area, uniformly curved, with all points equidistant from the center. Class 11 Physics Gravitation CBSE EXAM 2024-25

Poll

tonny34

Asked: December 18, 2024In: Class-11-Physics

If the density of earth is doubled keeping its radius constant, then acceleration due to gravity g is

If Earth’s mass is doubled while keeping its radius constant, gravitational force increases, resulting in stronger gravity on its surface. Class 11 Physics Gravitation CBSE EXAM 2024-25

Poll

tonny34

Asked: December 18, 2024In: Class-11-Physics

Acceleration due to gravity g for a body of mass m on earth’s surface is proportional (Radius of earth = R, mass of earth = M) to)

Acceleration due to gravity is the rate at which an object accelerates towards Earth, approximately 9.81 m/s² near the surface. Class 11 Physics Gravitation CBSE EXAM 2024-25

Poll

tonny34

Asked: December 18, 2024In: Class-11-Physics

Two balls, each of radius R, equal mass and density are placed in contact, then the force of gravitation between them is proportional to

Mass is the amount of matter in an object, while density is mass per unit volume, showing compactness. Class 11 Physics Gravitation CBSE EXAM 2024-25

Poll

lokesh12

Asked: December 17, 2024In: Class-11-Physics

Two spherical bodies of mass M and 5 M and radii R and 2R respectively are released in free space with initial separation between their centers equal to 12 R. If they affact each other due to gravitational force only, then the distance covered by the smaller body just before collision is

A collision is an event where two or more bodies come into contact and exert forces on each other, causing momentum and energy changes. Class 11 Physics Gravitation CBSE EXAM 2024-25

Poll

lokesh12

Asked: December 17, 2024In: Class-11-Physics

Suppose that the gravitational force varies inversely as the nth power of distance. Then, the times period of a planet in circular orbit of radius R around the sun will be proportional to

Gravitational force is the attractive force between two masses, dependent on their masses and inversely proportional to the square of their distance. Class 11 Physics Gravitation CBSE EXAM 2024-25

Category: Class-11-Physics

Kepler discovered

A body is orbiting around earth at a mean radius which is two times as greater as the parking orbit of a geostationary satellite, the period of body is

Two satellites A and B have ratio of masses 3 : 1 in circular orbits of radii r and 4r. The ratio of total mechanical energy of A to B is

The time period of a satellite of earth is 5 hours. If the separation between the earth and the satellite is increased to 4 times the previous valiue, the new time period will. become

A particle of mass 10 g is kept on the surface of a uniform sphere of mass 100 kg and radius 10 cm. Find the work to be done against the gravitational force between them to take the particle far away from the sphere. You may takr G = 6.67 x 10⁻¹¹ Nm² kg⁻²

If the density of earth is doubled keeping its radius constant, then acceleration due to gravity g is

Acceleration due to gravity g for a body of mass m on earth’s surface is proportional (Radius of earth = R, mass of earth = M) to)

Two balls, each of radius R, equal mass and density are placed in contact, then the force of gravitation between them is proportional to

Two spherical bodies of mass M and 5 M and radii R and 2R respectively are released in free space with initial separation between their centers equal to 12 R. If they affact each other due to gravitational force only, then the distance covered by the smaller body just before collision is

Suppose that the gravitational force varies inversely as the nth power of distance. Then, the times period of a planet in circular orbit of radius R around the sun will be proportional to

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