NEET 2026 (Phase 1) · PhysicsPrevious Year Question
Each side of a metallic cube of mass 5.580 kg is measured to be 9.0 cm. Keeping the significant figures in view, the density of the material of the cube can be best expressed as X × 10³ kg m⁻³, where the value of X is:
- A.7.654
- B.7.6
- C.7.65
- D.7.7✓
Correct Answer
(D) 7.7
Solution & Explanation
Correct Answer (D): 7.7 ρ = 5.580/(0.090)³ = 7654 kg m⁻³ = 7.654×10³. Side 9.0 cm has 2 significant figures → round to 7.7×10³. X = 7.7.
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