Physics
The motion of a body around a circular path is an example of

Uniform speed, variable velocity
Uniform speed, uniform velocity
Uniform speed, variable acceleration
Uniform velocity, variable acceleration

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Physics
It is easier for a man to swim in sea water, than in river water because

The sea is-deeper than the river
The density of sea water is lesser than the density of river water
The density of sea water is more than the density of river water
The sea is wider than the river

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Physics
Siphon will fail to work if:

The densities of the liquid in the two vessels are equal.
Both its limbs are of unequal length.
The temperature of the liquids in the two vessels are the same.
The level of the liquid in the two vessels are at the same height.

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Physics
To resolve an object in an electron microscope,

None of these
The wavelength of the electrons must be greater than the diameter of the object.
Both A & B
The wavelength of the electrons must be close to the diameter of the object

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