A. y-rays B. x-rays C. Microwaves D. Radiowaves
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A. y-rays B. x-rays C. Microwave D. Radiowave
A. Electric only B. Magnetic only C. Both A and B D. None of these
A. Eraser B. Grazer C. Maser D. Laser
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A. Radio wave and microwave region B. Microwave and visible wave C. Visible and ultra-violet region D. Ultra-violet and x-ray
A. Ultra-violet B. Infra-red C. Visible D. Microwave
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A. Radiowave B. x-ray C. Ultra-violet ray D. Infra-red ray
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A. Radiowave B. Y-ray C. x-ray D. Microwave
A. Speed B. Frequency C. Intensity D. Amplitude
A. An electric field only B. A magnetic field only C. Both electric and magnetic fields D. No such field at all