Question

Which of the following statements is / are correct ?

• A. A solar panel is made by combining a large number of solar concentrators.
• B. To work properly, wind energy generators need wind speeds of at least about 15 km/h.
• C. Many of the sources ultimately derive their energy
• D. none

Answer 1

The correct option is A A solar panel is made by combining a large number of solar concentrators.

A solar concentrator uses lenses, called Fresnel lenses, which take a large area of sunlight and direct it towards a specific spot by bending the rays of light and focusing them. Some people use the same principle when they use a magnifying lens to focus the Sun's rays on a pile of kindling or paper to start fires.