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JEE Advanced Physics Mathematics in Physics 2025 JEE Advanced 2025 (Paper 1)

JEE Advanced Physics Question (2025) — Solution

Question

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. A. 3.2 10^ -5
  2. B. 32.0 10^ -6
  3. C. 3.0 10^ -5
  4. D. 3 10^ -5

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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