AP EAMCET · PHYSICS · Units and Dimensions
The length of the side of a cube is \(1.2 \times 10^{-2} \mathrm{~m}\). Its volume up to correct significant figures is
- A \(1.732 \times 10^{-6} \mathrm{~m}^3\)
- B \(1.73 \times 10^{-6} \mathrm{~m}^3\)
- C \(1.70 \times 10^{-6} \mathrm{~m}^3\)
- D \(1.7 \times 10^{-6} \mathrm{~m}^3\)
Answer & Solution
Correct Answer
(D) \(1.7 \times 10^{-6} \mathrm{~m}^3\)
Step-by-step Solution
Detailed explanation
Length of cube, \(1=1.2 \times 10^{-2} \mathrm{~m}\) \(\therefore \quad\) Volume \(=1^3=\left(1.2 \times 10^{-2}\right)^3=1.728 \times 10^{-6} \mathrm{~m}^3\) \(\therefore\) The volume of cube upto correct significant figure is \(\mathrm{V}=1.7 \times 10^{-6} \mathrm{~m}^3\)
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