एक अल्प-प्रबलित खंड (under-reinforced section) के प्रतिरोध आघूर्ण (moment of resistance) की गणना किसके आधार पर की जाती है?

As per IS 456:2000, the limiting moment of resistance of a rectangular singly reinforced concrete section depends primarily on the:

In an under-reinforced concrete beam section subjected to increasing load, which of the following events happens first?