Question Detail

PHY 101 PHY 101 Past Questions Objective Question

Question

The bulk modulus of elasticity of water is 2.1×10^9 N/m² and its mass density is 1000 kg/m³. Calculate the speed of sound waves in water.

Options
A 1449 m/s
Correct Answer
B 1040 m/s
C 1428 m/s
D 1320 m/s
Correct Answer

Option A is the correct answer.

Detailed Explanation

Speed of sound in water = √(Bulk modulus / density) = √(2.1×10^9 / 1000) ≈ 1449.1m/s.

Hint

Use the formula v = √(B/ρ).

Question Info