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Physics

Physics
Energy travels from Sun to Earth through

Modulation
Convection
Conduction
Radiation

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Physics
Which phase change is an example of an exothermic process?

All listed here
Gas to Solid
Gas to Liquid
Liquid to Solid

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Physics
In a water lifting electric pump, we convert

Kinetic energy into Potential energy
Electrical energy into Potential energy
Kinetic energy into Electrical energy
Electrical energy into Kinetic energy

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Physics
The earth-wire of a cable is connected to

Short circuitry of the appliance
The filament of the appliance
The fuse of the appliance
The outer metallic body of the appliance

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Physics
In a particular system, the units of length, mass and time are chosen to be 10 cm, 10 g and 0.1 s respectively. The unit of force in this system will be equivalent to

1 N
10 N
100 N
0.1 N

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Physics
During hot weather, the fan produces a feeling of comfort. This is because

Our perspiration eva-porates rapidly
Fan supplies cool air
Fan cools the air
Conductivity of air increases

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