Physics
Which one among the following components is used as an amplifying device?

Transistor
Capacitor
Diode
Transformer

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Physics
Pressure Cooker cooks faster because

Higher temperature is attained for cooking
Boiling point decreases with rise of pressure
It cooks the food at low pressure
The material of the cooker is a good conductor

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Physics
Inside an aeroplane, flying at a high altitude,

the pressure inside is less than the pressure outside.
the pressure is the same as that outside.
normal atmospheric pressure is maintained by the use of air pumps.
normal humidity and partial vacuum are maintained.

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