関連ワード:
define the following term power of lens define the following terms power of lens principal focus of a concave mirror define the term power of lens define the term power of lens in what unit is it expressed define the term power of lens also write its unit define the term power of lens write its unit explain the term power of lens explain the term power of lens and how it is measured define the term power of a lens give its si unit what do you mean by the power of lens
