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Physics

Physics
Friction is caused by the ________ on the two surfaces in contact.

Irregularities
Smoothness
Gaps
Densities

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Physics
Surface tension in a liquid is due to :

Gravitational force between molecules
Cohesive force between molecules
Electrical force between molecules.
Adhesive force betweenmolecules

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Physics
Magnetic domains normally occur in

Iron
All of these
Silver
Copper

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Physics
Which conservation principle is applicable in the case of the motion of a rocket?

Conservation of momentum
Conservation of charge
Conservation of energy
Conservation of mass

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Physics
What is found in frequency modulation ?

Change in frequency and dimension
Fixed frequency
Change in dimension only
Fixed dimension

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Physics
Magnetic field lines about a current-carrying wire

Circle the wire in closed loops
Extend radially from the wire
Both of these
None of these

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