The body ofa refrigerator is painted white, but the pipes and metal grid at its back are painted black. Why ?

The area of a square sheet is 250 sq. cm. If one-fourth of the sheet is painted red, then half of the sheet is painted green and the remaining is painted white. Find the percentage of the area painted in white.

Why is the copper tube of a solar water heater painted black from outside ?

Black body radiation is white and a hole in the cavity of a radiator is a black body. Explain.

Why is the box of a solar cooker painted black from inside ?

Two symmetric dice flipped with each dice having two side painted red, two painted black, one painted yellow and the other painted white. What is the probability that both land on the same ?

The front compound wall of a house is decorated by wooden spheres of diameter 21 cm, placed on small supports as shown in Fig 13.32. Eight such spheres are used for this purpose, and are to be painted silver. Each support is a cylinder of radius 5cm and height 7cm and is painted black.Find the cost of paint required if silver paint cost 25 paisa per cm^2 and black paint cost 5 paisa per cm^2

Why are solar heating devices painted black form inside ?