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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
Define the Stefan–Boltzmann Law.
💡 Hint: Think about how temperature affects radiation.
Question 2
Easy
What does the Stefan–Boltzmann constant (σ) approximate to?
💡 Hint: It is a specific constant used in thermal calculations.
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 does the Stefan–Boltzmann Law state?
- The energy radiated by a body is inversely proportional to its temperature.
- The energy radiated by a body is proportional to its absolute temperature to the fourth power.
- The energy radiated by a body depends on its color.
💡 Hint: Think about how temperature changes affect heat.
Question 2
True or False: A blackbody has an emissivity less than 1.
- True
- False
💡 Hint: Recall the definition of a blackbody.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
A solar panel absorbs 1000 W/m² from sunlight. If its emissivity is 0.9 and it operates at 350 K, what is the power it emits back to the environment?
💡 Hint: Remember to plug into the emissivity formula.
Question 2
Determine the temperature of a blackbody that emits 5000 W/m² according to the Stefan–Boltzmann Law.
💡 Hint: Rearranging formulas can help isolate the temperature.
Challenge and get performance evaluation