Physics-(general)
NEET Physics (general) MCQ Question
Type: MCQ-numerical-Easy-Class 11
What is the height of a mountain if the shear stress at its base is equal to the elastic limit of a typical rock, given the density of the rock is 3 x 10^3 kg/m^3 and gravitational acceleration is 10 m/s^2?
A
10 km
B
8 km
C
12 km
D
15 km
Correct Answer
Option A
Detailed Explanation
The elastic limit for a typical rock is given as 30 x 10^7 N/m^2. Using the relation hρg = 30 x 10^7 N/m^2, with ρ = 3 x 10^3 kg/m^3 and g = 10 m/s^2, we find h = 10 km.
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