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PHYSICS

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

Bragg Spectrometer
G.M. Counter
Cyclotron
Mass Spectrometer

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

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Physics
Transition ions absorb light in :

Microwave region
Visible region
Infrared region
Ultraviolet region

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Physics
Which one type of radiation has the longest wave length

X-ray
Radio Wave
Ultraviolet
Infrared

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Physics
Forged documents are detected by

Beta rays
Gamma rays
Infra-red rays
Ultraviolet rays

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