Professional Courses
Industry-relevant training in Business, Technology, and Design to help professionals and graduates upskill for real-world careers.
Categories
Interactive Games
Fun, engaging games to boost memory, math fluency, typing speed, and English skills—perfect for learners of all ages.
Typing
Memory
Math
English Adventures
Knowledge
Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is reflectivity?
💡 Hint: Think of it as the opposite of absorptivity.
Question 2
Easy
What is the equation that relates absorptivity and reflectivity for opaque surfaces?
💡 Hint: There are two variables in this equation.
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 reflectivity measure?
- The fraction of radiation absorbed
- The fraction of radiation transmitted
- The fraction of radiation reflected
💡 Hint: Think about the opposite of absorptivity.
Question 2
If a surface's absorptivity is 0.2, what is its reflectivity for an opaque surface?
💡 Hint: Use the absorptivity to find reflectivity.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Design an experiment that measures the reflectivity of two different materials. Explain the methodology you would use.
💡 Hint: Consider how to standardize your measurements.
Question 2
Scenario: A building needs improved energy efficiency during summer. Propose ways to enhance its reflective properties and discuss the potential impacts.
💡 Hint: Think about how reflective surfaces interact with sunlight.
Challenge and get performance evaluation