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Physics-

General

Easy

Question

0The correct sequence of the increasing wavelength of the given radiation sources is

Radioactive sources, X-ray tube, crystal oscillator, sodium vapour lamp
Radioactive source, X-ray tube, sodium vapour lamp, crystal oscillator
X-ray tube, radioactive source, crystal oscillator, sodium vapour lamp
X-ray tube, crystal oscillator, radioactive source, sodium vapour lamp

The correct answer is: Radioactive source, X-ray tube, sodium vapour lamp, crystal oscillator

Radioactive source, X-ray tube, sodium vapour lamp, crystal oscillator

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Electric fields induced by changing magnetic fields are

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The magnetic field of an Electromagnetic Wave is given by $B subscript Y end subscript equals 3 blank cross times 10 to the power of negative 7 end exponent s i n blank open parentheses 10 to the power of 3 end exponent x plus 6.29 cross times blank 10 to the power of 12 end exponent t close parentheses.$
The wavelength of theElectromagnetic Wave is

The magnetic field of an Electromagnetic Wave is given by $B subscript Y end subscript equals 3 blank cross times 10 to the power of negative 7 end exponent s i n blank open parentheses 10 to the power of 3 end exponent x plus 6.29 cross times blank 10 to the power of 12 end exponent t close parentheses.$
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If $epsilon subscript 0 end subscript$ and $mu subscript 0 end subscript$ represent the permittivity and permeability of vacuum and $epsilon$ and $mu$ represent the permittivity and permeability of medium, then refractive index of the medium is given by

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