Bar is a unit of which one of the following?

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Q: 104 (CDS-I/2008)
Bar is a unit of which one of the following?

question_subject: 

Science

question_exam: 

CDS-I

stats: 

0,38,2,1,0,38,1

keywords: 

{'bar': [0, 0, 2, 0], 'unit': [0, 1, 5, 10], 'pressure': [0, 0, 0, 1], 'force': [0, 0, 0, 2], 'energy': [0, 0, 1, 2], 'frequency': [0, 0, 1, 3]}

Option 1: Force - A force is a measure of the interaction between two objects. It can cause an object to accelerate or change shape. However, the bar is not a unit of force.

Option 2: Energy - Energy is the ability to do work or cause change. It is measured in joules or calories. The bar is not a unit of energy.

Option 3: Pressure - Pressure is defined as the force applied per unit area. It is commonly measured in units such as pascal (Pa) or bar. The bar is indeed a unit of pressure, and it is widely used for expressing atmospheric pressure or pressure in hydraulic systems.

Option 4: Frequency - Frequency is the number of occurrences of a repeating event per unit of time. It is measured in units such as hertz (Hz). The bar is not a unit of frequency.

In conclusion, the correct answer is option 3: pressure. The bar is a unit of pressure, commonly used in various applications.