If an empty cylinder Is half ruled with a liquid, Its centre of gravity is
shifted upwards
shifted downwards
shifted neither upward nor downward
shifted upward or downward depending on the density of the liquid
Correct Answer :
B. shifted downwards
Related Questions
The rate of cooling of a hot body depends on
the nature of the radiating surface
area of the radiating surface
temperature difference between the body and the surroundings
All the above
A bar magnet tied in the middle with a thread is suspended at the South Pole of the earth. The magnet will be in
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a nearly vertical position with its South Pole downwards
a nearly vertical position with its North Pole downwards
a slanting position
A photon is
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a photo film
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It is difficult to bon potatoes at the top or a mountain because
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When a bullet is fired from a gun
the gun moves forward
the gun jumps up
the gun does not move
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In an oil lamp, holes are provided below the chimney so that
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the convection current of air may be maintained to keep the lamp burning
the brightness of the lamp may be increased
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When a bullet is fired from a gun
the gun moves forward
the gun jumps up
the gun does not move
the gun recoils with the same momentum as the bullet
Moon has no atmosphere because
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its surface is full of rocks
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Besides protons, the nucleus of an atom contains
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neutrons
neutrons and electrons
electrons, neutrons and other particles
A small bubble of air deep down in a lake rises up to the top of the lake. The volume of the bubble on coming up will
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decrease
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Formation of shadows can be explained by
rectilinear propagation of light
reflection
refraction
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The end product in the uranium disintegration series is
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One can be recognised by his voice alone due to the factor of
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decreases
remains the same
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Drinks kept in a vacuum flask remain hot or cold as the case may be for a long time because
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there is vacuum between the double walls
the cork is a poor conductor of heat
of all the above
Enriched uranium means
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Uranium in which the concentration of the isotope U-235 is more than in the naturally occuring uranium
None of the above
The mirage is a phenomenon
generally considered as a desert happening
caused by unequal heating of the several layers of the atmosphere above the desert
in which the refracted rays take a curved path resulting in total internal refection
All the above
The Space Application Centre for training in Satellite Communication Technology is located at
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Mumbai
Ahmedabad
New Delhi
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distilled water
alcohol
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When we sweat, we feel comfortable under a fan because
the air circulated by the fan is cool
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the material of the bob
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their masses
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Henri Bacquerel
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alternating current of very high frequency
alternating current of very high voltage
a very large direct current
a high voltage direct current
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they make the electric equipment more reliable and easier for servicing
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All the above
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None of the above