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PHYSICS

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

Bragg Spectrometer
Cyclotron
G.M. Counter
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 :

Ultraviolet region
Infrared region
Visible region
Microwave region

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Physics
Which one type of radiation has the longest wave length

Ultraviolet
Radio Wave
X-ray
Infrared

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Physics
Forged documents are detected by

Beta rays
Ultraviolet rays
Gamma rays
Infra-red rays

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