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

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Physics
Transition ions absorb light in :

Infrared region
Ultraviolet region
Microwave region
Visible region

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Physics
Which one type of radiation has the longest wave length

Radio Wave
X-ray
Infrared
Ultraviolet

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Physics
Forged documents are detected by

Ultraviolet rays
Infra-red rays
Gamma rays
Beta rays

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