A steel scale measures the length of a copper wire as $80.0\,cm,$ when both are at $20^\circ C$ (the calibration temperature for scale). What would be the scale read for the length of the wire when both are at $40^\circ C$ $?$ (Given $\alpha_{steel} $ = $11 \times {10^{ - 6}}$per$°C$ and $\alpha_{copper}$ = $17 \times {10^{ - 6}}per\,^\circ C$)
$80.0096\,cm$
$80.0272\,cm$
$1\,cm$
$25.2\,cm$
In a thermostat two metal strips are used, which have different ............
Give temperature $^oC$, $^oF$ and $K$ when density of water is maximum.
A rod of length $10\ meter$ at $0\,^oC$ having expansion coefficient $\alpha = (2x^2 + 1) \times 10^{-6}\,C^{-1}$ where $x$ is the distance from one end of rod. The length of rod at $10\,^oC$ is
When vapour condenses into liquid
Write relation between coefficient of linear and volume expansion.