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The outer surface of a beaker containing ice cubes becomes wet in short while - Give scientific reason.

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Question  The outer surface of a beaker containing ice cubes becomes wet in short while. Answer  When ice cubes are placed in a beaker, ice starts melting.  The heat required for melting is absorbed from the surrounding air and also from the beaker to some extent.  Hence, the temperature of the air and beaker falls.  The capacity of air to hold water vapour depends upon the temperature of the air, and this capacity decreases as the temperature decreases.  At a certain low temperature, the surrounding air becomes saturated with water vapour present in it.  As the temperature falls further, the air is unable to hold all the water vapour.  Hence, the extra water vapour starts condensing on the cold outer surface of the beaker in the form of minute drops.  Therefore, The outer surface of the beaker containing ice cubes becomes wet in a short while.
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Newlands' Law Of Octaves Information

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 Newlands' Law Of Octaves (Do, Re, Mi, Fa, So, La, Ti) 

Law of Octaves 



                         Do You Know: Do, Re, Mi, Fa, So, La, Ti. 

INFORMATION:- 

                         The English scientist John Newlands correlated the atomic masses of elements to their properties in a different way. In the year 1866 Newlands arranged the elements known at that time in an increasing order of their atomic masses. It started with the lightest element hydrogen and ended up with Thorium. He found That every eight element had properties similar to those of the first.

                          For example, Sodium is the eighth element from lithium and both have similar properties also, Magnesium shows similarity with fluorine. Newlands compared this similarity with the octaves in music. he called the similarity observed in the eighth and the first element as the Law Of Octaves.

                          In the Indian music system there are seven main notes, namely, Sa, Re, Ga, Ma, Pa, Dha, Ni. and their collection is called 'Saptak'. The frequency of the notes goes on increasing from 'Sa' of the upper 'saptak' at the double the frequency of the original 'Sa'. It means that notes repeat after completion  of one 'Saptak'. The seven notes in the western music Do, Re, Mi, Fa, So, La, Ti. 

                          The note 'Do' having double the original frequency comes again at the eighth place. This is the octave of western notes. Music is created by the use of variety in the use of these notes.

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