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Physics

Physics
The S.I. unit of electric charge is :

Coulomb
Kelvin
Ampere
E.s.u

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Physics
Sound travels at the fastest speed in

water
vacuum
air
steel

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Physics
Which of the following criterion is used for any metal to be used as a cooking material ?

More specific heat
More thermal conductivity
Less thermal conductivity
Less electrical conductivity

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Physics
In hydro power station, the motion produced in turbines is due to

Production of steam
Burning of diesel
Burning of coal
Flow of water

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Physics
Pitot tube is used to measure

Velocity at stagnation point
Static pressure
Dynamic pressure
Stagnation pressure

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Physics
Ultrasound devices operate with minimum frequency from

60 kHz
45 kHz
20kHz
35 kHz

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