Physics
In a ________ the wave particles of the medium vibrate in a direction perpendicular to the direction of wave propagation

Field
Transverse
Longitudinal
Rolling

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

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

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Physics
Energy in reflected light :

Decreases with the increase in angle of incidence
Does not depends on the angle of incidence
Becomes maximum for angle of incidence equal to 45°
Increases with the increase in angle

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