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anonymous

  • 5 years ago

why do soap and petrol give out the seven colours when they are exposed in sunlight

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  1. anonymous
    • 5 years ago
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    due to refraction

  2. anonymous
    • 5 years ago
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    chromatic dispersion takes place

  3. anonymous
    • 5 years ago
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    but does it depend on the materialistic properties

  4. anonymous
    • 5 years ago
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    yes

  5. anonymous
    • 5 years ago
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    its due to dispersion of light.. white light has 7 colours say VIBGYOR.. when white light passes through petrol or soap, different colours get dispersed.. since each colour has its own wavelength n phase velocity, it gets disperse at different angles.. so we can see different colours

  6. anonymous
    • 5 years ago
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    This wikipedia article [ http://en.wikipedia.org/wiki/Soap_bubble#Interference_and_reflection ] says that it is due to interference - not refraction and dispersion.

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