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Physics

Physics
For an object, the state of rest is considered to be the state of ________ speed.

Increasing
Inverse
Zero
Decrease

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Physics
Alpha particle is the nucleus of an atom of

Oxygen
Lithium
Helium
Hydrogen

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Physics
When two semiconductors of pand n-type are brought in contact, they form p-n junction which acts like a/an

Oscillator
Amplifier
Rectifier
Conductor

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Physics
Water cannot be used to extinguish fire caused by electric current, because

It may cause electrocution
It may cause hydrolysis
It may cause electrolysis
It may spoil the wiring

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Physics
The best material for the core of a transformer is

Hard steel
Soft iron
Mild steel
Stainless steel

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Physics
When pressure is increased the melting point of ice

Increases
Does not change
Depends on the impurities in the ice
Decreases

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