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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
Define conduction.
💡 Hint: Think about how heat travels in a metal rod.
Question 2
Easy
What is thermal conductivity?
💡 Hint: Focus on materials like metal vs. wood.
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What is the main mechanism of heat transfer in conduction?
- Molecular movement
- Convection currents
- Molecular collisions
💡 Hint: Think about what happens at the microscopic level when heat is applied.
Question 2
Is thermal conductivity constant for all materials?
- True
- False
💡 Hint: Recall examples of good and poor thermal conductors.
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Two rods, one made of copper and another of aluminum, both 1 m long with cross-sections of 0.02 m², are heated at one end to 200°C. Calculate the rate of heat transfer through both rods, given their thermal conductivities are 385 W m⁻¹ K⁻¹ and 205 W m⁻¹ K⁻¹ respectively.
💡 Hint: Apply the conduction formula separately for each material based on their thermal conductivities.
Question 2
A glass rod (K=0.8 W m⁻¹ K⁻¹) is 1.5 m long and has insulation on its sides. If one end is kept at 100°C, what temperature would be at the other end after 10 minutes if the heat transfer rate is known to be 15 W?
💡 Hint: Rearranging the heat conduction formula will help isolate the unknown temperature.
Challenge and get performance evaluation