Find the pitch of the screw.
A carpenter, while driving a screw through a wooden block of thickness 1.5 cm notices that he has to rotate the screw 20 times for the purpose. Then the pitch of the screw is:
A carpenter, while driving a screw through a wooden block, of thickness 1.5 cm, notices that he has to rotate the screw 20 times for the purpose. Then the pitch of the screw is: