Question

Unit of work in MKS system is
(A) Calorie
(B) Newton
(C) Joule
(D) watt

Answer 1

To solve this question we have to know about the MKS unit. We know that, The MKS system of units is a physical system of measurement that uses the meter, kilogram, and second (MKS) as base units. It incorporated base units other than the meter, kilogram, and second in addition to derived units. An incomplete list of the base and derived units appears below. Since the MKS system of units never had a governing body to rule on a standard definition, the list of units depended on different conventions at different times.

Complete step by step answer:
MKS system, system of units of measurement based on the metric system and having the meter of length, the kilogram of mass and the second of time as its fundamental unit. The MKS unit of work is Joule.
We can also say, The SI unit of work is the joule (J), which is defined as the work expended by a force of one newton through a displacement of one meter. The dimensionally equivalent newton-meter is sometimes used as the measuring unit for work, but this can be confused with the unit newton-meter, which is the measurement unit of torque.

Note:
We also have to know that, MKS Unit of Energy the MKS stands for meter-kilogram-second. 1 Joule is equivalent to one Newton-meter.
When used in conjunction with the Use System command, the MKS system sets the following units for the given dimensions.
Unit Name-
Length - meter
Mass – kilogram
Time- second
Force - Newton
Energy- Joule
Power - Watt
Pressure- Pascal