A rod of length 40cm has the coefficient of linear expansion `alpha_(1)=6times10^((-6)0)C`. The other rod has coefficient of linear expansion, `alpha_(2)=4times10^((-6)0)C`.If the difference in their length at all temperature remains the same,the length of the other rod is

The coefficient of linear expansion of gold is 14 xx 10^(-6)//""^(@)C . Find the coefficient of linear expansion on Fahrenheit scale.

An isosceles triangles is formed with a thin rod of length l_(1) and coefficient of linear expansion alpha_(1) , as the base and two thin rods each of length l_(2) and coefficient of linear expansion alpha_(2) as the two sides. The distance between the apex and the midpoint of the base remain unchanged as the temperature is varied. the ratio of lengths (l_(1))/(l_(2)) is

An isosceles triangles is formed with a thin rod of length l_(1) and coefficient of linear expansion alpha_(1) , as the base and two thin rods each of length l_(2) and coefficient of linear expansion alpha_(2) as the two sides. The distance between the apex and the midpoint of the base remain unchanged as the temperature is varied. the ratio of lengths (l_(1))/(l_(2)) is

An isosceles triangles is formed with a thin rod of length l_(1) and coefficient of linear expansion alpha_(1) , as the base and two thin rods each of length l_(2) and coefficient of linear expansion alpha_(2) as the two sides. The distance between the apex and the midpoint of the base remain unchanged as the temperature is varied. the ratio of lengths (l_(1))/(l_(2)) is

Two metallic rods of length l and 3l have coefficient of linear expansion alpha and 3alpha respectively. The coefficient of linear expansion ofr their series combinations, is

The coefficient of linear expansion of a metal rod does not depend uponthe original length of the rod

The coefficient of linear expansion of steel and brass are 11 xx 10^-6//^@ C and 19 xx 10^-6// ^@ C , respectively. If their difference in lengths at all temperature has to kept constant at 30 cm , their lengths at 0^@ C should be

Two rods each of length L_(2) and coefficient of linear expansion alpha_(2) each are connected freely to a third rod of length L_(1) and coefficient of expansion alpha_(1) to form an isoscles triangle. The arrangement is supported on a knife-edge at the midpoint of L_(1) which is horizontal. what relation must exist between L_(1) and L_(2) so that the apex of the isoscles triangle is to remain at a constant height from the knife edge as the temperature changes ?

If two rods of length L and 2L having coefficients of linear expansion alpha and 2alpha respectively are connected so that total length becomes 3L, the average coefficient of linear expansion of the composite rod equals

If two rods of length L and 2L having coefficients of linear expansion alpha and 2alpha respectively are connected so that total length becomes 3L, the average coefficient of linear expansion of the composite rod equals