A vane 20 cm long and 10 cm in diameter was pressed into a soft marine clay at the bottom of a bore hole. Torque was applied gradually and failure occurred at 1000 kg cm. The cohesion of the clay in kg/cm2 is :

A vane 20 cm long and 10 cm in diameter was pressed into a soft marine

1.	A vane 20 cm long and 10 cm in diameter was pressed into a soft marine clay at the bottom of a bore hole. Torque was applied gradually and failure occurred at 1000 kg cm. The cohesion of the clay in kg/cm2 is :
A.	<img src="/_files/images/civil-engineering/upsc-civil-service-exam-questions/17-146-1.png">
B.	<img src="/_files/images/civil-engineering/upsc-civil-service-exam-questions/17-146-2.png">
C.	<img src="/_files/images/civil-engineering/upsc-civil-service-exam-questions/17-146-3.png">
D.	<img src="/_files/images/civil-engineering/upsc-civil-service-exam-questions/17-146-4.png">
Answer» B. <img src="/_files/images/civil-engineering/upsc-civil-service-exam-questions/17-146-2.png">