Class 11 · Physics
Q1.A body cools from 80°C to 60°C in 5 minutes in a room at 20°C. Using Newton's law of cooling, the time to cool from 60°C to 40°C is:
Q2.A steel rail of length 10 m is laid at 20°C. If α_steel = 1.2×10⁻⁵ /°C, by how much should the gap be kept between rails to allow for expansion up to 50°C?
Q3.When a metal rod is heated, its length increases. The coefficient of linear thermal expansion α is defined by:
Q4.The normal human body temperature is 98.6°F. In Celsius, this is approximately:
Q5.How much heat is needed to convert 200 g of ice at -10°C to steam at 100°C? (c_ice = 2100 J/kg·K, Lf = 3.36×10⁵ J/kg, c_water = 4200 J/kg·K, Lv = 2.26×10⁶ J/kg)
Q6.This is a sample question to preview what you'll get in the full practice test...
Create a timed test from 35 questions in Thermal Properties of Matter. Pick your difficulty, get instant scores.
Start Practice Test