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Physics

Physics
The SI unit for measuring work and energy is

Ohm
Joule
Watt
Farad

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Physics
The device used for measuring the wavelength of X-rays is

Bragg Spectrometer
Mass Spectrometer
G.M. Counter
Cyclotron

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Physics
Electric power is measured in units of

Watt
Joule
Ampere
Volt

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Physics
Heat from the sun reaches earth by the process of

Conduction
Convection
All of these
Radiation

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Physics
In very cold countries alcohol is used as a thermometric liquid because

Its freezing point is very low
Alcohol can be coloured for its level to be seen easily
Alcohol is a poor conductor of heat
It will not stick to the glass tube

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Physics
Outside of cooking utensils are generally left black from below because

Black surface is a good conductor of heat.
Black surface is a good absorber of heat.
Black surface is a poor conductor of heat.
It is difficult to clean daily.

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