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Physics

Physics
When does land breeze occur?

Hot summer
Winter
Both A & B
Fall

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Physics
Two waves, each of amplitude 1.5 mm and frequency 10 Hz, are travelling in opposite direction with a speed of 20 mm/s. The distance in mm between adjacent nodes is :

2
1.5
1
1.2

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Physics
The mercury and sodium street lamps light up because of :

Electron emission
Atomic emission
Electron absorption
Atomic absorption

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

Rolling
Longitudinal
Field
Transverse

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Physics
Kilowatt-hour is the unit of :

Energy
Force
Momentum
Power

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Physics
The width of depletion layer of a P-N junction

Is increased under reverse bias
Decreases with light doping
Increases with heavy doping
Is independent of applied voltage

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