Correct Answer - Option 2 : Speed of both are same.
CONCEPT:
Electromagnetic spectrum: It is a collection of a range of different waves in sequential order from radio to gamma electromagnetic waves.
Frequency (ν) = speed of light (c)/wavelength (λ)
- The speed of all EM waves is the same.
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Visible Light: A portion in the spectrum of electromagnetic waves that is visible to the human eye, ranging roughly between 390 to 750 nm.
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X–rays are electromagnetic waves not mechanical wave because they are diffracted by the crystal.
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Radiation
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Range of wavelengths
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Typical wavelength
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↓
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Increasing wavelength
Decreasing
Energy
Decreasing
frequency
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Gamma
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10-16 m – 10-10 m
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10-15 m
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X-Rays
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10-13 m – 10-8 m
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10-10 m
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UV
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10-8 m – 400 nm
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10-8 m
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Visible Light
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400 nm – 700 nm
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|
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Infra-red
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700 nm – 10-3 m
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10-5 m
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Microwaves
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10-3 m – 10-1 m
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10-2 m
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Radio waves
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10-1 m – 106 m
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102 m
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