In a collar thrust bearing, the number of collars have been doubled while maintaining coefficient of friction

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In a collar thrust bearing, the number of collars have been doubled while maintaining coefficient of friction and axial thrust same. It will result in

(a) same friction torque and same bearing pressure

(b) double friction torque and half bearing pressure

(c) double friction torque and same bearing pressure

(d) same friction torque and half bearing pressure.

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