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Q. No.A radio can tune in to any station in the \(7.5\) MHz to \(12\) MHz bands. What is the corresponding wavelength band?
1. \(40\) to \(25\) m
2. \(10\) to \(100\) m
3. \(50\) to \(60\) m
4. \(20\) to \(10\) m
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Subtopic: Â Electromagnetic Spectrum |
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Which physical quantity does not change in a vacuum for \(X\text-\)rays?
1. Speed of light
2. Wavelength
3. Frequency
4. None of these
1. Speed of light
2. Wavelength
3. Frequency
4. None of these
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