Question

Mention the purpose of blackening the interior of a solar cooker

Answer 1

The reason for this is because black color absorbs more heat form sunlight as compared to other colors. This allows for an increased absorption heat that allows for rapid rise in amount of heat inside the solar cooker.

Answer 2

Solar cookers are blackened from inside because black absorbs more heat from sun as compared to other colours.

EXPLANATION:

When more heat is absorbed by the blackened interiors, the food is cooked faster as more heat is absorbed inside the cooker. This increased heat build high pressure as well as results in high temperature inside the cooker resulting in saving time required to cook food.

Also the black colour prevents heat loss from the cooker keeping the cooked food hotter for long time periods.