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Questions  

Choose the correct sequence of radiation sources in increasing order of the wavelength of electromagnetic waves produced by them

a
X-ray tube, magnetron value, radioactive source, sodium lamp
b
Radioactive source, X-ray tube, sodium lamp, Magnetron value
c
X-ray tube, Magnetron value, Sodium lamp, radioactive source
d
Magnetron value, Sodium lamp, X-ray tube radioactive source

detailed solution

Correct option is B

Radioactive source   ~10−12mX-ray tube   ~10−10m                   Sodium lamp  ~10−9mMagnetron value  ~10−3m

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