Asked by Harshita Bhola | 27th Jan, 2011, 10:09: PM

Expert Answer:

Dear student,
clouds are white because their water droplets or ice crystals are large enough to scatter the light of the seven wavelengths (red, orange, yellow, green, blue, indigo, and violet), which combine to produce white light. Clouds will appear dark or gray when either they are in another clouds shadow or the top of a cloud casts a shadow upon its own base.
Hope this helps.
Thanking you

Answered by  | 27th Jan, 2011, 10:11: PM

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