Elasticity

Depth of sea, h=1km=1000m
Relative decrease in volume, ‌∆V∕V=0.01%=0.0001=10−4
Acceleration due to gravity, g=10m\/s2
Density of sea water, ρ≈103kg\/m3
Step 1. Calculate the pressure at that depth
P=ρgh=1000×10×1000=107N\/m2
Step 2. Use the definition of Bulk modulus K
K=−‌∆P∕∆V\/V
Here, ∆P=P=107N\/m2, and ‌∆V∕V=−10−4
K=‌107∕10−4=1011N\/m2
Final Answer:
K=1011N\/m2
Correct Option: D) 10×1010N\/m2