The force that keeps a body in a circular motion is called
the centripetal force
the centrifugal force
the frictional force
All the above
Correct Answer :
A. the centripetal force
Related Questions
A permanent magnet may be demagnetised by
placing it inside a solenoid through which an alternating current is flowing
heating the magnet to redness and then allowing it to cool
dropping it several times or hammering it while lying east-west
All the above
A boy is swinging a ball attached to a string in a horizontal circle. If the string snaps
the ball will travel towards the centre of the circle and fall down
it will continue to travel along a tangent to the circle at the point the ball was at the time of snapping and finally fall down
it will fall down at the same place where the string breaks
None of these
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the time for the upward journey and downward journey are the same
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the downward journey takes more time
Cant be said
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gets bent towards the normal
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Neutron and Proton
Electron and Proton
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WO Coolidge
Henry Cavendish
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Jupiter
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In a vacuum the following three articles are dropped at the same time and from the lame height. Which will reach the ground quicker?
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a feather
all will reach the ground at the same time
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Bhaskara
Aryabhatta
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Mercury is used in a barometer because
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at the ordinary temperature its vapour pressure is small
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The heat produced in a conductor due to the passage of a current through it is proportional to
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the resistance of the conductor
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All the above
Who discovered that the Cree Call acceleration Is the same for any object at a given place?
Newton
Pascal
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The brightest planet in the Solar System is
Jupiter
Mercury
Venus
Sirius
Two tumblers stuck together can be separated by
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pouring ice cold water on the outer tumbler
pouring hot water into the inner tumbler
dipping both the tumblers in hot water
The pressure of air at high altitude is less than the atmospheric pressure at the sea level. Hence the boning point of water at a hill top
is more than at sea level
is equal to that sea level
is less than at sea level
depends on the surrounding temperature
Where does the centre of gravity of a rubber ring lie?
on the outer surface
in the inner surface
at the centre of the ring
None of the above
The phenomenon of radioactivity was discovered by
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Because of impurity in the water
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nuclear fusion
chemical combustion
boiling
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semiconductors
superconductors
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linear motion
vibratory motion
rotational motion
None of the above
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It will come up
It will remain at the same level
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plasma
ionized gas
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repel each other
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The force that keeps a body in a circular motion la called
the centripetal force
the centrifugal force
the frictional force
All the above
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Pyrometer
Eudiometer
Barometer
Hydrometer
Nuclear fission process means
absorption of a neutron by a nucleus
breakup of the nucleus of a heavy atom into two nearly equal halves emitting two or three neutrons and releasing large amounts of nuclear energy in the process
the scattering of neutrons
formation of heavier nucleus