Multiple Choice
Which diagram below illustrates the path of a light ray as it travels from a given point X in air to another given point Y in glass? 
Comprehend the principles of thermodynamics and their application to the natural world.
Identify the laws governing nuclear changes and their implications for energy production and conservation.
Distinguish between nuclear fission and fusion and understand their energy outputs.
Understand the basics of energy input and output in systems and their implications for efficiency and sustainability.
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