Given below are two statements, one labelled as Assertion (A) and the other as Reason (R). In the light of the above statements, choose the correct answer from the options given below.
Assertion (A):In a concentrating type solar collector, the temperature can be raised up to 500 degrees Celsius.
Reason (R):In a concentrating type solar collector, the magnitudes of the collector area and the absorber area are numerically the same.
ABoth A and R are correct and R is the correct explanation of A
BBoth A and R are correct but R is not the correct explanation of A
CA is correct but R is not correct ✓ Correct
DA is not correct but R is correct
Correct answer: (C) A is correct but R is not correct
Explanation
The assertion is correct but the reason is wrong regarding concentrating solar collectors.
The assertion holds, since concentrating collectors can raise temperatures up to about 500 degrees Celsius.
The reason fails, since a concentrating collector has a much larger collector area than absorber area.
Concentration works precisely by focusing a wide aperture onto a small absorber.
Only flat-plate collectors have equal collector and absorber areas.
The concentration ratio measures how much the collecting area exceeds the absorber.
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