NEET Physics Bulk Modulus MCQ Question
Imagine a diagram showing a spherical object made of glass immersed in a fluid, experiencing uniform compressive forces from all directions due to increased pressure. If the initial volume of the glass sphere is 50 cm³ and it undergoes a fractional volume change of 0.0002 under a pressure of 10 atm, what is the bulk modulus of the glass material?
5 × 10⁸ N m⁻²
5.0 × 10⁸ N m⁻²
25 × 10⁸ N m⁻²
7.5 × 10⁸ N m⁻²
Correct Answer
Detailed Explanation
Bulk modulus (K) is calculated as pressure change divided by fractional volume change. Here, K = (10 atm × 1.013 × 10⁵ Pa/atm) / 0.0002 = 2.5 × 10⁸ N m⁻².
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