Question

Which symbol is used to express
change in length? | A H uRadA

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Answer 1

In the International System of Units (SI), the base unit of length is the metre (symbol, m) and is now defined in terms of the speed of light (about 300 million metres per second).

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Answer 2

Answer:

The symbol, which is used to express the change in length is Δl (delta l).

Step-by-step explanation:

• Length is the difference between two points.
• The SI unit of length is meter. Another units of length are km, cm, mm etc.
• Length is expressed by the symbol 'l'. The change in any quantity is expressed by Δ(the quantity).

       Example: (i) Change in volume is expressed by ΔV.

      (ii) Change in temperature is expressed by ΔT.

      (iii) Change in pressure is expressed by ΔP.

     (iv) Change in heat is expressed by ΔH.

     (v) Change in mass is expressed by Δm.

 That's why change in length is expressed by Δl.

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