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Physics

Physics
Which, of the following radiations has the least wavelength ?

X-rays
A-rays
G-rays
B-rays

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Physics
Which one is the unit of surface tension of a liquid

None of these
Joule/ mm
Newton /m2
Electron volt /cm2

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Physics
Water is not suitable as a calorimetric substance because it :

Has high boiling point
Is a good conductor
Low latent heat of vapourization
Has high specific heat

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Physics
The fact that the planets move around the Sun, not in circles but in ellipses, was first demonstrated by

Martin Luther
Johannes Kepler
Copernicus
Galileo

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Physics
The audio signals of TV are

Frequency modulated
Velocity modulated
Amplitude modulated
Unmodulated

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Physics
A solid needle placed horizontally on the surface of the water floats due to

Viscosity of water
Surface tension of water
Capillary action
Water pressure

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