Spread 400gm of sand homogenously in pne saucer and put 400gm of water i n another saucer and place them under the sun. When the temperature is measured after 10minutes, the temperature of the sand is found to be more than that of water, why

answer; (d) spontaneous processes are characterized by the overall conversion of order to disorder;

waves moving from a fast medium to a slow medium will experience a reflection as light travels more slowly than red light. total internal reflection occurs when the critical angle is.

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