Questions
Substance having very small co-efficient of linear expansion, among the following is
detailed solution
Correct option is D
In case of invar , the potential well of the of potential energy (u) v.s. seperation (r) between two atoms is nearly symmentrical about a vertical line through equilibrium separation as shown in the figure.So the mean separation between two atoms remains almost the same.Hence option (4) is right.**For invar steel coefficient of linear expansion is very small because it is an alloy.Talk to our academic expert!
Similar Questions
There is a rectangular metal plate in which two cavities in the shape of rectangle and circle are made, as shown with dimensions. P and Q are the centres of these cavities. On heating the plate, which of the following quantities increase?
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