Physics-(general)
NEET Physics (general) MCQ Question
Type: MCQ-numerical-Medium-Class 11
What is the height at which the shear stress in a mountain, given by hρg, equals the elastic limit of typical rock, if the density of the rock is 3 × 10^3 kg/m^3 and g = 10 m/s^2? The elastic limit is 30 × 10^7 N/m^2.
A
10 km
B
5 km
C
15 km
D
20 km
Correct Answer
Option A
Detailed Explanation
Using the formula hρg = 30 × 10^7 N/m^2, with ρ = 3 × 10^3 kg/m^3 and g = 10 m/s^2, we solve for h and find h = 10 km.
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