STANDARDPhysics-Units and Measurements
STANDARD Physics Significant Figures MCQ Question
Type: MCQ-numerical-Medium-Class 11
A cube has a side of length 1.2 × 10⁻² m. Its volume upto correct significant figures is
A
1.7 × 10⁻⁶ m³
B
1.73 × 10⁻⁶ m³
C
1.78 × 10⁻⁶ m³
D
1.732 × 10⁻⁶ m³
Correct Answer
Option A
Detailed Explanation
The volume of the cube is calculated as V = (1.2 × 10⁻² m)³ = 1.728 × 10⁻⁶ m³. Since the result can only have two significant figures, rounding off gives V = 1.7 × 10⁻⁶ m³.
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