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Units and Measurement

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Question : 10 of 33
Marks: +1, -0
State the number of significant figures in the following :
(a) 0.007 m2^{2}
(b) 2.64 × 1024^{24} kg
(c) 0.2370 g cm−3^{-3}
(d) 6.320 J
(e) 6.032 N m−2^{-2}
(f) 0.0006032 m2^{2}
Solution:  
(a) 0.007 m20.007\ \mathrm{m}^{2} has one significant figures.
(b) 2.64×1024 kg2.64 \times 10^{24}\ \mathrm{kg} has three significant figures.
(c) 0.2370 g cm−30.2370\ \mathrm{g}\,\mathrm{cm}^{-3} has four significant figures.
(d) 6.320 J6.320\ \mathrm{J} has four significant figures.
(e) 6.032 N m−26.032\ \mathrm{N}\,\mathrm{m}^{-2}has four significant figures.
(f) 0.0006032 m20.0006032\ \mathrm{m}^{2}has four significant figures.
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