# [Ans.] Which of The Following is Not a Fundamental Unit?

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## Which of The Following is Not a Fundamental Unit?

Friends! Out of all the options given below, option (b) is the correct answer.

• (A) Metre
• (B) Litre
• (C) Second
• (D) Kilogram

#### Here is a Simplified Explanation of Why The Litre is Not a Fundamental Unit –

So Friends! Imagine that you are baking a cake. You need to measure the ingredients, such as flour, sugar, and milk. You use a measuring cup to measure the milk. The measuring cup is marked with different units, such as cups, millilitres, and litres.

The unit that you use to measure the milk is not a fundamental unit. A fundamental unit is a unit that cannot be defined in terms of other units. The unit of litre is a derived unit, meaning that it is defined in terms of other units.

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In the case of litres, it is defined in terms of the fundamental unit of length, the meter. A litre is equal to 1 cubic decimeter, which is equal to 1/1000 of a cubic meter.

So, while litres are a commonly used unit of measurement, they are not fundamental units. Fundamental units are more important because they are used to define all other units of measurement.

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