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Physics

Physics
The ''Choke' used with a tube light is basically

A capacitor
A transformer
A resistor
An inductor

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Physics
The ordinary and maximum tolerance limit of sound by human being is

50 db to 70 db (decibel)
70 db to 85 db (decibel)
65 db to 75 db (decibel)
60 db to 80 db (decibel)

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Physics
Rectifiers are used to convert:

High voltage to low voltage
Direct current to Alternating current
Low voltage to high voltage
Alternating current to Direct current

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Physics
A piece of paper and a cricket ball are dropped from the same height. Under which of the following conditions do both reach the surface simultaneously ?

They must have the same mass
They must have the same density
They must be dropped in vacuum
They must have the same volume

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Physics
Which of the following is arranged in order of decreasing conductivity?

Copper, Silver, Aluminium, Steel
Aluminium, Silver, Copper, Steel
Copper, Aluminium, Steel, Silver
Silver, Copper, Aluminium, Steel

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Physics
If a body moves with a constant speed in a circle

Its velocity remains constant
No acceleration is produced in it
No force acts on it
No work is done on it

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