Question

A pair of scissors is a:
(A) Simple machine
(B) Compound machine
(C) Complex machine
(D) None of these

Answer 1

Hint: In this problem, we are going to apply the concept of machine working and learn about the different types of machines. Basically, there are six basic machines.

Complete step by step answer:
Simple machine: A simple machine is a mechanical system that alters the measurement or direction of a force; they can be characterized as the least complex instruments that utilize mechanical leverage to increase power. A simple machine utilizes a solitary applied power to work against a single load force. Disregarding friction losses, the work done on the load is equivalent to the work done by the applied power.

Compound machine: A compound machine is a machine that comprises more than one simple machine. Some compound machines consist of only two simple machines.
Compound machines will in general have a more prominent mechanical favourable position than simple machines. That is on the grounds that the mechanical favourable position of a compound machine equals the result of the mechanical points of interest of all its component simple machines.

Complex machines: A complex machine is a machine composed of at least two simple machines that make your work simpler to do. There are six simple machines from which all complex machines are made.

The six simple machines are:
1) The lever
2) The inclined plane
3) The wheel and axle
4) The wedge
5) Pulley
6) Screw

Scissor is a type of compound machine made of wedges and levers. Hence, option B is correct.

Note:Here we may be confused as to whether scissor is a compound or complex machine. Both complex and compound machines are almost the same but a compound machine can perform more complex operations.