A copper rod (`alpha`= 17 `times` `10^-6 `) of length 30cm and the other rod are joined end to end to form a composite rod of length 1m at `25 degree` C . When the system is heated to 125 'C , the composite rod expands by 1.91mm, Then `alpha` of other rod
`2 times 10^-5/C`
`3times 10^-7/c`
`4 times 10^-5/C`
`5 times 10^-5/C`

Two rods of equal cross sections, one of copper and the other of steel, are joined to form a composite rod of length 2.0 m at 20^@C , the length of the copper rod is 0.5 m. When the temperature is raised to 120^@C , the length of composite rod increases to 2.002m. If the composite rod is fixed between two rigid walls and thus not allowed to expand, it is found that the lengths of the component rods also do not change with increase in temperature. Calculate Young's moulus of steel. (The coefficient of linear expansion of copper, alpha_c=1.6xx10^(-5@)C and Young's modulus of copper is 1.3xx10^(13)N//m^(2) ).

A brass rod of length 1 m is fixed to a vertical wall at one end, with the other end keeping free to expand. When the temperature of the rod is increased by 120^@C , the length increases by 3 cm . What is the strain?

The temperature gradient in a rod of 0.5 m length is 80^(@)C//m . It the temperature of hotter end of the rod is 30^(@)C , then the temperature of the cooler end is

A composite rod comprising two rods of mass m and 2m and each of length l = 1 m as shown in the figure. Assume omega = 10 rad//s and m = 1 kg , the KE of the rotating composite rod is. .

A brass rod of length 50 cm and diameter 3.0 cm is joined to a steel rod of the same length and diameter. What is the change in length of the combined rod at 250^(@)C , if the original length are at 40.0^(@)C ? (Coefficient of linear expansion of brass =2.0 xx 10^(-5)//^(@)C, steel = 1.2 xx 10^(-5)//^(@)C

A copper rod and a steel rod maintain a difference in their lengths of 10 cm at all temperature . If their coefficients of expansion are 1.6xx10^(-5) K^(-1) and 1.2xx10^(-5) K^(-1) , then length of the copper rod is

Determine the lengths of an iron rod and copper ruler at 0^@ C if the difference in their lengths at 50^@ C and 450^@ C is the same and is equal to 2 cm. the coefficient of linear expansion of iron =12xx10^(-6)//K and that of copper =17xx10^(-6)//K .

Determine the lengths of an iron rod and copper ruler at 0^@ C if the difference in their lengths at 50^@ C and 450^@ C is the same and is equal to 2 cm. the coefficient of linear expansion of iron =12xx10^(-6)//K and that of copper =17xx10^(-6)//K .

A composite rod is made by joining a copper rod, end to end, with a second rod of different material but of the same area of cross section. At 25^(@)C , the composite rod is 1 m long and the copper rod is 30 cm long. At 125^(@)C the length of the composite rod increases by 1.91 mm . When the composite rod is prevented from expanding by holding it between two rigid walls, it is found that the constituent rods have remained unchanged in length inspite of rise of temperature. Find young's modulus and the coefficient of linear expansion of the second rod (Y of copper =1.3xx10^(10) N//m^(2) and a of copper =17xx10^(-6)//K ).

A composite rod is made by joining a copper rod, end to end, with a second rod of different material but of the same area of cross section. At 25^(@)C , the composite rod is 1 m long and the copper rod is 30 cm long. At 125^(@)C the length of the composte rod increases by 1.91 mm . When the composite rod is prevented from expanding by bolding it between two rigid walls, it is found that the constituent reds have remained unchanged in length in splite of rise of temperature. Find yong's modulus and the coefficient of linear expansion of the second red (Y of copper =1.3xx10^(10) N//m^(2) and a of copper =17xx10^(-6)//K ).