What will be the effect of Young's modulus of the material of the beam (q), if the breadth and thickness of the beam varies?

The young's modulus is defined as the property of the material which is used to measure the stiffness of the material.

Mathematically, the Young's Modulus is directly proportional to the ratio of stress and strain.

The young's modulus is the known as the property of the materials which is always constant and will never change with change in thickness or breadth of the material.

For Example:

The Young's Modulus of stainless steel of grade 316 is 193GPa193GPa.

If the size of the material will vary then it will not effect the Young's Modulus of the material.

The above explanation is the effect of the beam when the thickness and breadth of the beam varies.