Representing a gravitational field - class-XII
Description: representing a gravitational field | |
Number of Questions: 44 | |
Created by: Naresh Verma | |
Tags: gravitation circular motion and gravitation gravitation: planets and satellites gravitational fields physics |
Electrical, as well as gravitational affects, can be thought to be caused by fields. Which of the following is true of an electrical or gravitational field?
A satellite is revolving in a circular orbit at a height $'h'$ from the earth's surface (radius of earth $R$;$h\ <\ <\ R$). The minimum increase in its orbital velocity required, so that the satellite could escape from the earth's gravitational field, is close to:(Neglect the effect of atmosphere.)
A force of 10 N of gravitational force in CGS units is represented as
The presence of gravitational field is required for the heat transfer by
The force experienced by a unit mass at a point in the gravitational field is called its
The ratio of SI units to CGS of the gravitational intensity is
Which of the following represents the unit for gravitational intensity?
The space in which a body experiences a force by virtue of its mass, is called a/an
The speed at which the gravitational field propagates is
The unit of (V) Gravitational Potential is
Value of gravitational constant, $'G'$ is
Gravitational field is
The unit of gravitational field is
What is gravitational field?
Which of the following option is/are correct?
Determine the gravitational force of two particle of mass $3kg$ and $7 kg$ separated by a distance $2m$.
How far from the centre of the Moon is the Earth-Moon neutral point, where the Earth and the Moon's gravitational field strengths are equal in magnitude but opposite in direction?
$ M _E= 6.0 \times 10^{24} kg \ \ \ M _M = 7.4 \times 10^{22} kg$
The radius of Moon's orbit (assumed to be circular) is: $3.8\times 10^{8} m$.
Gravitational field is directed
Due to a mass distribution, the gravitational field is $\dfrac{k}{x^3} $ along x-axis where $k$ is a constant. If the gravitational potential is taken to be at infinity, then the gravitational potential at $x$ is
The gravitational intensity is denoted by :
A gravitational field is
A gravitational field is a model used to explain the influence that a massive body extends into the space around itself, producing a force on another massive body.
If the distance between two particles is reduced to half, the gravitational attraction between them will be
Under the force of gravity, a heavy body falls quicker than a light body (neglect air resistance).
Three particles of masses $2m, m$ and $2m$ are at the vertices $A, B$ and $C$ of an equilateral triangle $ABC$ of side length $'l'$. Then the intensity if gravitational field at the mid point of side $BC$ is:-
PRESSURE AND KINETIC INTERPRETATION OF TEMPERATURE
At what temperature the mean kinetic energy of hydrogen molecules increases to such that they will escape out of the gravitational field of earth for over?
take $({ v } _{ c }=11.2km/sec)$
The gravitational field in a region is given by $\vec {g} = 2\hat {i} + 3\hat {j} m/s^{2}$. The work done in moving a particle of mass $1\ kg$ from $(1, 1)$ to $\left (2, \dfrac {1}{3}\right )$ along the time $3y + 2x = 5$ is
At some planet gravitational acceleration is $1.96m/sec^{ -2 }$. If is safe to jump from a height of 2 m on earth, then what should be the corresponding safe height for jumping on the planet:
A body is acted upon by a constant force directed towards a fixed point. The magnitude of the force varies inversely as the square of the distance from the fixed point then path can be described by an equation similar to:
Potantial (V) at a point in space is given by $v = x^2 + y^2 + z^2$. Gravitational field at a point (x, y, z) is
A large object is placed at exactly $65$% of the distance to the moon from the earth. Find out correct statement about the object ?
What is the time period satellite near the earth surface (neglect the height of orbit of satellite from the surface of ground)?
Two block of mass $10 kg$ and $20kg$ is separated by a distance $100 km$. What is the gravitational field (F) if $G=6.674 08 \times 10^{-11} m^3 kg^{-1} s^{-2}$?
If the radius of the earth were to shrink and its mass were to remain the same, the acceleration due to gravity on the surface of the earth with?
What is the gravitational field strength at the surface of Jupiter (mass $1.9\times 10^{27} kg$, radius $7.1\times 10^7 m$?
Both earth and moon are subject to the gravitational force to the sun. As observed from the sun, the orbit of the moon
The fours basic forces in nature are.
I. Gravitational force
II. Electromagnetic force
III. Strong nuclear force
IV. Weak nuclear force
The relative magnitudes of these forces are in the order of.
Read the following statements.
I. A magnetic field is unable to penetrate into a superconductor.
II. An electric field can be cut off by a screen of conducting material
III. Gravitational field can be freely transmitted through all bodies
Which statement is false?
Three particles each of mass m are kept at verticles of an equilateral triangle of side L. The gravitational field at centre due to these particle is:
The gravitational field lines are
Two masses m and 100m are kept at points A and B. The gravitational field lines
The field strength for a planet A of mass M and radius R is F. In another planet, the density is found to be 27 times the density of the planet A and the radius of the new planet is one third of A. Then,
There are _____ gravitational lines of force inside a spherically symmetric shell