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Physics

Physics
If a copper wire is increased to double its length, its resistance will become

Half
Double
One–fourth
Four times

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Physics
Which of the following is an example of continous emission spectrum?

Spectrum of an oil frame
Spectrum of a water
None
Both

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Physics
To convert temperature from Celcius to Kelvin scale, you must ________ the given temperature.

Subtract 273
Divide by 273
Add 273
Multiply 273

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Physics
The ''four stroke petrol engine' is based on

Diesel-cycle
Otto-cycle
Carnot-cycle
Boyle's-cycle

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Physics
Among the following materials sound travels fastest in

Water
Vacuum
Steel
Air

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Physics
Megahertz is a measurement of

Capacity
Frequency
Speed
Wavelength

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