Home
Class 11
PHYSICS
If two rods of length L and 2L having co...

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

A

`(3)/(2) alpha`

B

`(5)/(2) alpha`

C

`(5)/(3) alpha`

D

`(3)/( 5) alpha`

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Similar Questions

Explore conceptually related problems

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

There are two rods of length l_1 and l_2 and coefficient of linear expansions are alpha_1 and alpha_2 respectively. Find equivalent coefficient of thermal expansion for their combination in series.

Two rods of lengths l_(1) and l_(2) are made of materials having coefficients of linear expansion alpha_(1) and alpha_(2) respectively. What could be the relation between above values, if the difference in the lengths of the two rods does not depends on temperature variation?

If alpha, beta and gamma coefficient of linear, superficial and volume expansion respectively, tehn

Two rods having length l_(1) and l_(2) , made of materials with the linear coefficient of expansion alpha_(1) and alpha_(2) were welded together. The equivalent coefficients of linear expansion for the obtained rod:-

Two different wires having lengths L_(1) and L_(2) and respective temperature coefficient of linear expansion alpha_(1) and alpha_(2) are joined end - to - end . Then the effective temperature coefficient of linear expansion 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

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 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 ?