An object is placed 1.5 m from a plane mirror. How far is the image from the object?

Chromatic aberration in lenses can be corrected by using a combination of 

A cube of water with side 10.0 cm floats vertically in water with 4.5 cm its length submerged. Calculate the density of the wood.
[Density of water = 1 g/cm\(^3\); D = 0.090 g/cm\(^3\)]

A temperature of 60º C is equivalent to 

All of the following uses are practical applications of x-ray except