the approximate height above the lake up to which the mountain reaches.
Answer to Problem 106A
The height of the mountain from the lake is 2 km.
Explanation of Solution
Given:
The diameter of the lake is
Distance of the mountain from the lake is
Height of the person is
Formula used:
From the concept of similarity of triangles, we can have,
Here,
Calculation:
Light has the property to reflect from the surface. The angle of incidence from a smooth surface is equal to the angle of reflection. The incident ray, reflected ray and normal line to the surface lie on the same plane.
Rearrange the equation (1) for
Substitute the values of
Conclusion:
Hence, the height of the mountain from the lake is 2 km.
Chapter 21 Solutions
Glencoe Physics: Principles and Problems, Student Edition
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