Home
Class 11
PHYSICS
A steel rail of length 5 m and area of c...

A steel rail of length 5 m and area of cross section 40 `cm^2` is prevented from expanding along its length while the temperature rises by `10^(@) C`. If coefficient of linear expansion and Young's modulus of steel are `1.2 xx 10^(-5) K^(-1) and 2 xx 10^(11) "Nm"^(-2)` respectively, the developed in the rail is approximately :

A

`2 xx 10^(9)` N

B

`3 xx 10^(-5)` N

C

`2 xx 10^(7)` N

D

`1 xx 10^(5)` N

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Similar Questions

Explore conceptually related problems

If the shear modulus and bulk modulus of a material are 0.42 xx 10^(11) Nm^(-2) and 0.56 xx 10^(11) Nm^(-2) respectively then young.s modulus of that material is -----

A steel wire, 2mm in diameter, is just stretched between two fixed points at a temperature of 30^@C . Determine its tension when the temperature falls to 20^@C . (Coefficient of linear expansion of steel = 0.000011//""^@C , Young's modulus for steel = 2.0xx10^11Nm^(-2))

A uniform metal bar of length 10 m with a crack at its midpoint is clamped between two rigid supports. The bar buckles upward due to temperature rise of 40^(@)C . If the coefficient of linear expansion of the metal is 2.5 xx 10^(-6) .^(@)C^(-1) , the maximum displacement of the mid-point of the bar is

A steel wire of length 80 cm and of area of cross section 1.5 mm^(2) is stretched. Find the work done in increasing its length from 80.2 cm to 80.3 cm. (Y=2.0xx10^(11)Nm^(-2))

A steel scale is correct at 0^(@)C . The length of a brass tube measured by it at 40^(@)C is 4.5 m. The correct length of the tube at 0^(@)C is (Coefficients of linear expansion of steel and brass are 11xx10^(-6)//""^(@)Cand19xx10^(-6)//""^(@)C respectively.)