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Physics

Physics
Rolling friction is caused by ________

Power dissipation
Non-elastic effects
Gravity
Buoyancy

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Physics
A piece of ice is floating in water kept in a beaker. When all the ice melts the level of water will

Rise
Remain the same
Fall
First rise and then fall

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Physics
A piece of paper and a cricket ball are dropped from the same height. Under which of the following conditions do both reach the surface simultaneously ?

They must be dropped in vacuum
They must have the same density
They must have the same volume
They must have the same mass

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Physics
Blotting paper absorbs ink due to

Siphon action
Viscosity of ink
Capillary action phenomenon
Diffusion of ink through the blotting

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Physics
According to the Second Law of Motion, for a given force, acceleration is inversely proportional to the ________ of an object.

Mass
Force
Volume
Density

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Physics
A person can jump higher on the moon's surface than on the earth because :

The moon is cooler than earth
The moon has no atmosphere
The moon's surface is rough
The acceleration due to gravity in moon is smaller than that on the earth.

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