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Length, breadth and thickness of a strip having a uniform cross section are measured to be 10.5 cm , 0.05 mm , and 6.0 ~m , respectively. Which of the following option(s) give(s) the volume of the strip in cm ^3 with correct significant figures:

Options

  1. A3.2 10⁻⁵
  2. B32.0 10⁻⁶
  3. C3.0 10⁻⁵
  4. D3 10⁻⁵

Correct answer

D. 3 10⁻⁵

Step-by-step solution

L =10.5 ~cm 3 significant digits b =0.05 ~cm 1 significant digit t =6.0 ~m 2 significant digits Volume, V = Lbt must have only 1 significant digit aligned & V =10.5 0.05 10⁻¹ 6.0 10⁻⁴ ~cm ^3 & =3 10⁻⁵ cc aligned

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