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Physics

Physics
Period of oscillation of 3 cm microwaves in seconds is

1 × 1010
0.001
1 × 10–10
0.01

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Physics
The cooling by a desert Cooler is based on:

Air dehydration
Hot air replacement
Evaporative Cooling
Air Rehydration

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Physics
Eclipses occur due to which optical phenomena?

Refraction
Diffraction
Rectilinear propagation
Reflection

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Physics
Which of the following is correct about the properties of Gravitational Forces?

They are the strongest forces in nature
None
Both a and b
They observe inverse square law

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Physics
The force between charged particles is called as:

Nuclear Force
Electromagnetic Force
Gravitational Force
Centrifugal Force

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Physics
Which of the following is the cleanest source of energy?

Biofuel
Fossil fuel
Wind energy
Nuclear power

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