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Physics

Physics
Coolis tube is used to produce

X-rays
Radio waves
Micro waves
Gama rays

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Physics
A boy sitting in an open car moving with the constant speed throws a ball straight up into the air. The ball falls

Into his hand
By his side
In front of him
Behind him

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Physics
Rise of oil a wick is due to

Pressure of the oil
Density of the oil
Viscosity of the oil
Surface tension of the oil

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Physics
What is the SI unit of intensity of sound?

Heartz
Decibel
Newton
Tesla

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Physics
Which alternative energy source is exhaustible?

Geothermal energy
Tidal energy
Wind energy
Solar energy

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Physics
If the wavelengths corresponding to ultraviolet, visible and infrared radiations are given as lUV, lVIS and lIR respectively, then which of the following gives the correct relationship among these wavelengths?

LUV < lIR < lVIS
LUV > lIR > lVIS
LUV > lVIS > lIR
LUV < lVIS < lIR

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