If the modulus of elasticity for a given material is twice its modulus of rigidity, then bulk modulus is equal to

The layer at the centre of gravity of the beam as shown in the below figure, will be

The Young's modulus of a material is 125 GPa and Poissons ratio is 0.25. The modulus of rigidity of me material is

For a given stress, the ratio of moment of resistance of a beam of square cross-section when placed with its two sides horizontal to the moment of resistance with its diagonal horizontal, is

When a bar is subjected to a change of temperature and its deformation is prevented, the stress induced in the bar is