Two different wires having lengths L1 and L2 , and respective temperature coefficient of linear expansion α1 and α2 , are joined end-to-end. Then the effective temperature coefficient of linear expansion is:
.
2
4
.
(L1 + L2)αeff ΔT = L1α1 ΔT + L2α2 ΔT
(L1 + L2)αeff = L1α1 + L2α2
αeff =
A massless box contains ideal gas moving at 3v. If suddenly stopped, rise in tem
NextWhat is thermal coefficient of volume expansion for an ideal gas at constant pre
A brass wire length 2 m and radius 1 mm at 27°C is held taut between two rigid supports. Initially i
EasyA cylindrical metallic rod is in thermal contact with two reservoirs of heat, its two ends conduct a
MediumEasyA metallic sphere has a mass of 40 g. If its specific heat capacity is 0.15 cal g−1 °C−1, find the w
MediumSteam at 100°C is passed into 20 g of water at 10°C. When water acquires a temperature of 80°C, the
MediumThe amount of heat energy required to raise the temperature of 1g of Helium at constant volume, from
Practice Physics Exams
Full-length mock tests with detailed analytics, rank, and percentile.
Browse Exams