If fck is the characteristic cube compressive strength of concrete in N/mm2, then the modulus of elasticity of concrete as per IS: 456-2000 is assumed as:
1
5000 \(\rm \sqrt{f_{ck}}\)
2
3000 \(\rm \sqrt{f_{ck}}\)
3
1250 \(\rm \sqrt{f_{ck}}\)
4
2000 \(\rm \sqrt{f_{ck}}\)