Reduction in the book value of an asset over a period of time is called-
Appreciation
Depreciation
Proportion
Depletion
Reduction in the book value of an asset over a period of time is called Depreciation.
___is a method of depreciation, in which the cost of the asset is spread uniformly over the life years by writing off a fixed amount every year, where as in ___ method of depreciation, a fixed rate of depreciation is charged on the book value of the asset over its useful life.