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Why ambulance signal is blue instead …

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Why ambulance signal is blue instead of red

    • Posted by Anuksha V 7 years, 3 months ago

    CBSE > Class 12 > Physics
    • 1 answers

    Tushar Jaryal 7 years, 3 months ago

    as it is found that at night our mind will perceive that a lamp emitting a heigher frequency and shorter wavelength(eg blue or violet) of light will appear to be moving closer(if car is 10 m away from us it will look 6m away) while light with lower frequency and shorter wavelenght (red) appear to move away..i hope u will understand it..

    4Thank You

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