Physics fill in the blanks.

A scissors is a ___________ multiplier.

In class II lever, effort arm is __________ than the load arm.

Mechanical advantage = ___________ × velocity ratio

Mechanical advantage of single movable pulley is ________ [one/two/three].

Efficiency of ________ [practical/Idle] machine is less than 100%.

Decrease in mechanical advantage would __________ [decrease/ increase/ not affect] the efficiency.

Increase in velocity ratio would _________ [decrease/ increase/ not affect] the efficiency.

A single fixed pulley is a modified form of _________ [Class I lever/ Class II lever/ Class III lever].