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Which is a genuine disadvantage of using solar energy?
AIt releases large amounts of carbon dioxide
BIts fuel supply will run out within decades
CIt cannot be converted into electrical energy
DIts output depends on the weather and daylight
Answer & Solution
Correct answer: D. Its output depends on the weather and daylight
1. Solar output depends entirely on sunlight reaching the panel.
2. So generation falls on cloudy days and stops altogether at night.
3. That intermittency is the central practical drawback, alongside high installation cost and the large area needed.
4. Solar generation releases no carbon dioxide at the point of use, which is one of its main advantages.
5. Sunlight is not a fuel that can be exhausted, so the supply argument does not apply either.
_Source: NECTA ACSEE 2023 Physics 131/1, Question 7: Environmental Physics_