1.

Light travel in straight line but then why rainbow is curved

Answer» A rainbow is formed due the combined effect of three phenomenon; refraction,dispersion and reflection of light.For a rainbow to be formed,light has to hit the water droplet at an angle.Rainbow is not a single strip of light,but a combination of a million droplets splitting light in all directions. Due to the effect of wind and the downward motion of the droplets,the rainbow appears to be curved.


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