In a reinforced concrete section, the stress at the extreme fibre in compression is $5.80 \mathrm{MPa}$. The depth of neutral axis in the section is $58 \mathrm{~mm}$ and the grade of concrete is $\mathrm{M} 25$. Assuming linear elastic behavior of the concrete, the effective curvature of the section (in per $\mathrm{mm}$ ) is

(A) $2.0 \times 10^{-6}$

(B) $3.0 \times 10^{-6}$

(C) $4.0 \times 10^{-6}$

(D) $5.0 \times 10^{-6}$

In a reinforced concrete section, the stress at the extreme fibre in compression is $5.80 \mathrm{MPa}$. The depth of neutral axis in the section is $58 \mathrm{~mm}$ and the grade of concrete is $\mathrm{M} 25$. Assuming linear elastic behavior of the concrete, the effective curvature of the section (in per $\mathrm{mm}$ ) is

(A) $2.0 \times 10^{-6}$

(B) $3.0 \times 10^{-6}$

(C) $4.0 \times 10^{-6}$

(D) $5.0 \times 10^{-6}$

Group I contains representative load-settlement curves for different modes of bearing capacity failures of sandy soil. Group II enlists the various failure characteristics. Match the load-settlement curves with the corresponding failure characteristics.

Group I Group II

P. Curve J 1. No apparent heaving of soil around the footing

Q. Curve $\mathrm{K}$ 2. Rankine's passive zone develops imperfectly

R. Curve $\mathrm{L}$ 3. Well defined slip surface extends to ground surface

(A) $P-1, Q-3, R-2$

(B) $\mathrm{P}-3, \mathrm{Q}-2, \mathrm{R}-1$

(C) $P-3, Q-1, R-2$

(D) $\mathrm{P}-1, \mathrm{Q}-2, \mathrm{R}-3$

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