xi physics new chap 7 gravitation 77 profound hots
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XI Physics_New Chapter-7_GRAVITATION_[True or False Statement Questions]
S# Statements [HOTS TEST] Find out the truth in them, if any. True/False
A satellite in a circular orbit has a total energy that is positive, with potential energy being
1
twice the magnitude of kinetic energy.
A spherical shell with spherically symmetric mass distribution repels an external particle,
2
pushing it away from the center, contrary to expectations.
Altitude increases acceleration due to gravity within Earth, while depth decreases it,
3
regardless of the body's mass.
Aryabhatta proposed that Earth is the center of the universe, with the Sun and planets
4
revolving around it.
As a comet follows its elliptical orbit, its parameters change without conserving angular
5
momentum.
Astronauts in space never face orientation problems due to the absence of gravity as a
6
reference direction; it has no effect on their orientation.
Astronauts in space ships always detect gravity, which prevents them from experiencing
7
weightlessness during their journey.
Cavendish's experiment involved two small spheres, Si and S2, to measure the gravitational
8
constant by observing the rotation of a bar AB.
Changing a satellite's orbit from 2RE to 4RE requires no energy transfer, and there is no
9
change in kinetic and potential energies.
Estimating the Sun's mass accurately is impossible using Kepler's third law based on Earth's
10
orbital radius.
Galileo believed heavier objects fall faster due to their inherent gravitational attraction to
11
Earth.
Gravitational force between a hollow spherical shell and a point mass outside depends on
12
the shell's thickness.
Gravitational force on a rocket from Earth never becomes zero in space; it persists
13
indefinitely.
Gravitational forces between objects follow a linear law, and the gravitational potential
14
energy between two objects is given by GMm/r.
Gravitational intensity inside a hemisphere of uniform mass density points outward, away
15
from the center of the hemisphere.
Gravitational intensity varies randomly, pointing in different directions both outside and
16
inside a shell, making it unpredictable.
Gravitational interactions primarily depend on object size and color, potentially leading to
17
equilibrium between objects.
Gravitational potential energy between two masses is U = G * (m1 * m2) / r, with U, G, m1,
18
m2, and r defined.
Gravitational potential energy depends solely on the mass of the body, not its distance from
19
the center of the Earth.
20 Gravitational potential energy is a vector quantity with a direction associated with it.
Gravitational potential energy measures the energy required to move an object from the
21
Earth's surface to space, relative to zero potential energy on the surface.
Gravitational potential energy, V = G * (m1 * m2) / r, is infinite at r → infinity, and
22
gravitational force exhibits chaotic behavior, challenging conventional beliefs.
Gravitational potential increases as one moves further from the Earth's surface, following a
23
2/r relationship.
Gravitational shielding is easily achieved; a spherical shell effectively blocks all gravitational
24
forces from acting on a particle inside, defying conventional wisdom.
Gravity decreases by half at half the Earth's radius or a height equal to it, creating a gravity
25
gradient within Earth.
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