JEE Advance - Physics (2003 - No. 2)
A cube has a side of length 1.2 ✕ 10-2 m. Calculate its volume.
1.7 ✕ 10-6 m3
1.73 ✕ 10-6 m3
1.70 ✕ 10-6 m3
1.732 ✕ 10-6 m3
Förklaring
We have
V = l3 = (1.2 $$\times$$ 10$$-$$2)3 = 1.728 $$\times$$ 10$$-$$6 m3
Since l has two significant figures, V should also have two significant figures; hence,
V = 1.7 $$\times$$ 10$$-$$6 m3
Answer (A)
V = l3 = (1.2 $$\times$$ 10$$-$$2)3 = 1.728 $$\times$$ 10$$-$$6 m3
Since l has two significant figures, V should also have two significant figures; hence,
V = 1.7 $$\times$$ 10$$-$$6 m3
Answer (A)