If two rods of lengths L and 2L having coefficients a and 2a are joined in series Find a of combination.
(A) `(2)/(3)alpha`
(B) `(1)/(2)alpha`
(C)(5)/(3)alpha`
(D) `(3)/(6)alpha`

Two resistors R1 and R2 are in series.Their coefficients are alpha1 and alpha2 .Find the effective value of alpha ?

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

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

Two rods of length L_(1) and L_(2) are made of materials of coefficients of linear expansions alpha_(1) an alpha_(2) respectively such that L_(1)alpha_(1)=L_(2)alpha_(2) . The temperature of the rods is increased by DeltaT and correspondingly the change in their respective lengths be DeltaL_(1) and DeltaL_(2)

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.