Q1. Which of the following is a renewable source of energy derived from the sun’s radiation?
a) Wind energy
b) Solar energy
c) Nuclear energy
d) Fossil fuels
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Correct Answer: b) Solar energy
Explanation: Solar energy is obtained from the radiation of the sun, making it a renewable source. It can be converted into electricity or used for heating purposes, making it an environmentally friendly alternative to fossil fuels.
Q2. What device is commonly used to convert solar energy into electricity?
a) Wind turbine
b) Solar panel
c) Hydroelectric dam
d) Geothermal heat pump
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Correct Answer: b) Solar panel
Explanation: Solar panels are devices made up of photovoltaic cells that convert sunlight into electricity through the photovoltaic effect. They are commonly used in both residential and commercial settings to harness solar energy.
Q3. What is the unit of measurement for solar panel efficiency?
a) Watts
b) Volts
c) Amps
d) Percent
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Correct Answer: d) Percent
Explanation: Solar panel efficiency is typically measured as a percentage, representing the amount of sunlight that the panel can convert into usable electricity. Higher efficiency percentages indicate more effective conversion of solar energy.
Q4. Which layer of the sun’s atmosphere is responsible for producing solar energy?
a) Photosphere
b) Chromosphere
c) Corona
d) Core
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Correct Answer: d) Core
Explanation: The core of the sun is where nuclear fusion occurs, converting hydrogen into helium and releasing vast amounts of energy in the form of electromagnetic radiation, including sunlight.
Q5. Which country is the leading producer of solar energy in the world?
a) United States
b) China
c) Germany
d) Japan
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Correct Answer: b) China
Explanation: China is the world’s leading producer of solar energy, with a significant investment in both solar panel manufacturing and installation of solar power systems.