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Solar cookers are painted black inside because a black surface:

AEmits more light
BBlocks all heat
CAbsorbs more heat
DReflects more heat
Answer & Solution
Correct answer: C. Absorbs more heat
1. White surfaces reflect heat. 2. Black absorbs more under identical conditions. 3. A glass cover traps heat like a greenhouse. _Source: syllabus Science, Chapter 14, Sources of Energy._
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