The given figure shows the section of a wooden beam stiffened with two steel plates each of thickness 't' securely fixed to the sides. The second moment of area of the flitched beam about the X-X axis is (given: d = overall depth of the beam, b = width of the wooden section and m = modular ratio of the moduli of elasticity of steel and wood)

The given figure shows the section of a wooden beam stiffened with two

1.	The given figure shows the section of a wooden beam stiffened with two steel plates each of thickness 't' securely fixed to the sides. The second moment of area of the flitched beam about the X-X axis is (given: d = overall depth of the beam, b = width of the wooden section and m = modular ratio of the moduli of elasticity of steel and wood)
A.	<img src="/_files/images/civil-engineering/upsc-civil-service-exam-questions/100-605-1.png">
B.	<img src="/_files/images/civil-engineering/upsc-civil-service-exam-questions/100-605-2.png">
C.	<img src="/_files/images/civil-engineering/upsc-civil-service-exam-questions/100-605-3.png">
D.	<img src="/_files/images/civil-engineering/upsc-civil-service-exam-questions/100-605-4.png">
Answer» E.