CBSE Class 10 Answered
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Asked by | 10 Jan, 2009, 05:23: PM
Expert Answer
i) reflectors to concentrate light on a cooking container.
ii) insulated container.
iii) transparent glasslid.
iv) special reflectors which have a flexible reflective surface that is able to change its curvature to adjust to seasonal variations in the incident angle of sunlight.
v) using blackened or dark pots and trays.
Answered by | 10 Jan, 2009, 09:30: PM
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