<Table> <Tr> <Td> </Td> <Td> This article needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (November 2010) (Learn how and when to remove this template message) </Td> </Tr> </Table> <Tr> <Td> </Td> <Td> This article needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (November 2010) (Learn how and when to remove this template message) </Td> </Tr> <P> An elastic modulus (also known as modulus of elasticity) is a quantity that measures an object or substance's resistance to being deformed elastically (i.e., non-permanently) when a stress is applied to it . The elastic modulus of an object is defined as the slope of its stress--strain curve in the elastic deformation region: A stiffer material will have a higher elastic modulus . An elastic modulus has the form: </P> <Dl> <Dd> λ = def stress strain (\ displaystyle \ lambda \ (\ stackrel (\ text (def)) (=)) \ (\ frac (\ text (stress)) (\ text (strain)))) </Dd> </Dl>

The unit of modulus of elasticity is same as