# Young's modulus of elasticity for #"A"# and #"B"# are #"Y"_"A" = 1.1×10^11\ "Pa"# and #"Y"_"B" = 2.0 xx 10^11\ "Pa"#. Which is more elastic and why?

##### 1 Answer

substance

#### Explanation:

**Young's modulus**

Now,elasticity means the relative hindrance by an object during causing distortion of its structure i.e strain.

Now,stress means force applied per unit area i.e a measurement of pressure.

So,we can conclude that to cause a certain amount of strain of a more elastic substance we need to apply larger amount of stress.

Suppose,a material has Young's modulus

so,for the first substance we can write,

and for the second substance,

or,

so,

or,

As,

That means a substance which is more elastic will have higher value of Young's modulus.