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11th Class Physics Physical World / भौतिक जगत Question Bank Units and Measurements Conceptual Problems

  • question_answer
    Justify L + L = L and L - L = L.

    Answer:

                      When we add a length to another length, we get length only so L + L = L is justified. When we subtract a length from another length, again we get length. This justifies \[L-L=L\]


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