Let there be four articles having colours blue red black and white. When they are heated together and allowed to cool, the article that cool earlier is .

Four hot metallic articles which are coloured blue, red, black and white, and have the same temperature, are allowed to cool. Which will have the fastest cooling rate ?

A Blackbody, a Whitebody, A Bluebody and a Red coloured body are heated to same temperature and are allowed to cool in the same surroundings. Then the body that cools early is

A sphere, a cube and a thin circular plate, all having the same mass and made of the same material are heated to the same temperature and them allowed to cool. Which of them cools fastest ?