Request a call back

Join NOW to get access to exclusive study material for best results

CBSE Class 10 Answered

why vehicles moving in jaggy weather use yellow color headlight??????
Asked by mehaksaini | 02 Jul, 2009, 06:41: PM
answered-by-expert Expert Answer

It is important for fog lights to be one color
(rather than white, which is all colors) because the different
wavelengths(colors) of visible light scatter off the fog droplets
differently.  This phenomenon is known as "dispersion," because the
different colors of light in an image will separate from each other,
causing the image to "disperse."  If you illuminate the road with only one
wavelength (color) of light, the images of the objects you see will still
become somewhat blurry because of the scattering of light by the fog, but
at least you won't have extra problems from dispersion.  So, if we want to
use just one wavelength of light, which wavelength should we use?  It turns
out that light with short wavelengths scatters more than light with long
wavelengths (short to long:  violet, indigo, blue, green, yellow, orange,
red).  So, a long wavelength light will be best.  There's another thing to
consider, too:  our eyes are not equally sensitive to all colors.  It turns
out that we are most sensitive to yellow and green light.  So, our best
compromise between sensitivity for our eyes and a long wavelength for least
scattering is yellow light.

Answered by | 06 Jul, 2009, 04:26: PM
CBSE 10 - Physics
Asked by saritavishwakarma1986 | 04 Jan, 2024, 12:23: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Physics
Asked by udaykuna006 | 16 Jul, 2023, 07:20: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Physics
Asked by bhu.joshi54 | 08 Aug, 2022, 07:36: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Physics
Asked by abhishekuppala598 | 06 Feb, 2022, 09:30: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Physics
Asked by satishkumaridup | 12 Aug, 2021, 12:23: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Physics
Asked by Ankit9142110345 | 20 May, 2021, 09:58: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Physics
Asked by roysouvik862 | 25 Dec, 2020, 06:24: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
Get Latest Study Material for Academic year 24-25 Click here
×