Given below are two statements. In the light of the above statements, choose the correct answer from the options given below.
Statement I:A flat-plate solar collector has an optical concentrator.
Statement II:In a concentrating type solar collector, the area receiving the solar radiation is several times greater than the absorber area.
ABoth Statement I and Statement II are true
BBoth Statement I and Statement II are false
CStatement I is true but Statement II is false
DStatement I is false but Statement II is true ✓ Correct
Correct answer: (D) Statement I is false but Statement II is true
Explanation
The first statement that a flat-plate collector has an optical concentrator is wrong, since flat-plate collectors use no concentrator.
The second statement is correct that a concentrating collector gathers radiation over an area many times its absorber.
A flat-plate collector absorbs diffuse and direct sunlight over its plain surface without focusing.
A concentrating collector uses mirrors or lenses to focus a large aperture onto a small absorber.
The flat-plate claim fails while the concentrating claim holds.
Concentrating designs reach higher temperatures suited to power generation.
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