Consider a beam with circular cross-section of diameter

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Consider a beam with circular cross-section of diameter d. The ratio of the second moment of area about the neutral axis to the section modulus of the area is

1. d/2
2. πd/2
3. d
4. πd

Correct Option: A

Second moment of area or MOI of circular beam = I

Section modulus Z =	I
	y

MOI	=	I	= y =	d
Z	=	I_y	= y =	2