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Unit 20: Electromagnetic Waves

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Which factor increases the risk of electromagnetic radiation?

A Low frequency B Short wavelength C Low energy D Long wavelength

A Only wave nature B Only particle nature C Both wave and particle nature D Neither wave nor particle nature

A Amplitude B Frequency C Speed D Intensity

A Radio waves B Microwaves C Infrared rays D X-rays

A Infrared rays B Ultraviolet rays C Microwaves D Radio waves

A Reflection B Rectilinear propagation C Diffraction D Interference

A Increasing speed B Increasing frequency C Increasing amplitude D Increasing intensity

A Due to absorption B Due to reflection of blue light C Due to scattering of all wavelengths D Due to refraction

A Radio waves B Gamma rays C Infrared rays D Microwaves

A Electric and magnetic fields B Electric charges only C Magnetic poles only D Particles only