The difference between the lengths of steel rod and a brass rod is 0.6 at all temperatures. What are their lengths at `0^@C`? `(alpha_Steel = 12 xx 10^-6//^@C`,`(alpha_(brass)= 18 xx 10^-6//^@C`)

An aluminium rod and iron rod show 1.5 m difference in their lengths when heated at all temperature. What are their lengths at 0 ^@C if coefficient of linear expansion for aluminium is 24.5 xx 10^-6 //^@C and for iron is 11.9 xx 10^-6 //^@C

An aluminium rod and iron rod show 1.5 m difference in their lengths when heated at all temperature. What are their lengths at 0^@ C if coefficient of linear expansion for aluminium is 24.5 xx 10^(-6) //""^@C and for iron is 11.9 xx 10^(-6) //""^@ C

A disc has an area of 0.32 m^2 at 20^@C , what will be its area at 100^@C ? [alpha = 2 xx 10^-6/ @C]

A metal sphere 10.01 cm in diameter is placed on a brass ring of internal diameter 10 cm and at the same temperature of 10^@C . The temperature up to which they should be heated together so that the metal sphere just passes through the ring is [alpha_(me ta l)= 12 xx 10^-6/@C and alpha_brass= 18 xx 10^-6/@C]

The length of a rod is 0.5 xx 10^(2) m , the order of magnitude of the length of the rod is

Railway lines are laid with gaps to allow for expansion. If each line is 10 m long at 20^@C , what should be the length of the gap to be kept between two rails to allow for expansion if the maximum temperature that can be reached is 50^@C ? (alpha_(steel)=1.2 xx 10^-6//^@C)

A uniform steel rod of 2.5 mm^2 cross sectional area is heated through 40^@C . The force exerted it is ________. (alpha_(steel) = 1.2 xx 10^-5 /^@ C, Y_(steel)= 2 xx 10^11 N/m^2)

Length of a metal rod at temperature 27^@ C is 4.256m. Find the temperature at which the length of the same rod increases to 4.268m. ( alpha for iron = 1.2 xx 10^(-5) K^(-1) )

Railway tracks are laid with gaps for expansion. The gap between the steel rails 20 m long is 1.2 cm at 10^@C . The temperature at which the steel rails just touch each other is ( prop steel = 12 xx 10^-6//^@C)

A two litre glass flask contains some mercury. It is found that at all temperatures the volume of the air inside the flow remains the same. The volume of the mercury inside the flask is (alpha for glass = 9 xx 10^-6/^@C, gamma for mercury 1.8 xx 10^-4/^@C)