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Physics

Physics
Necessary element of change in solar energy to electrical energy

Silicon
Pure Copper
Berillium
Tantelum

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Physics
Which one of the following wavelengths of light is most effective in photosynthesis ?

Orange
Yellow
Blue
Green

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Physics
An object at rest may have

Momentum
Velocity
Potential energy
Kinetic energy

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Physics
Electrons carry a

Negative Charge
Neutral Charge
Variable Charge
Positive Charge

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Physics
Which of the following are methods of heat transfer?

Thermal Expansion
Revolution
Convection
Evaporation

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Physics
Conversion of sound energy into electrical energy is done by

Gramophone
Microphone
Solar cell
Loudspeaker

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