Home › CBSE Class 11 (Science) › Physics › Thermal Properties of Matter › A thin metal plate is heated by ΔT. Its fraction…
A thin metal plate is heated by ΔT. Its fractional area increase equals what?
Aαl ΔT
B2αl ΔT
Cαl ΔT/2
D3αl ΔT
Answer & Solution
Correct answer: B. 2αl ΔT
Area depends on two lengths, so the fractional change in area is 2αl ΔT.
Related questions
A temperature rise of 1 degree Celsius equals a rise of how many kelvin?The unit J/K is equivalent to which combination of base units?How many joules are in one kilocalorie (food calorie), as defined exactly?Heat capacity of an object is an extensive property. Which related quantity is intensive?Heat capacity of a system undergoing a phase change isBlackbody radiation curves depend on which property of the body?Newton's law of cooling holds good only when the temperature difference is what?As iron is heated in a flame, what colour sequence does it show?