A person is sitting at the very back of a canoe of length L, when the front just bumps into the dock. show answer No Attempt 50%
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Answer:
<h2>36cm from the surface</h2>Explanation:
Equation of refraction of a lens is expression according to the formula given below;
R is the radius of curvature of the convex refracting surface = 12cm
v is the image distance from the refracting surface
u is the object distance from the refracting surface
n₁ and n₂ are the refractive indices of air and the medium respectively
Given parameters
R = 12 cm
u = (since light incident is parallel to the axis)
n₁ = 1
n₂ = 1.5
Required
<em>focus point of the light that is incident and parallel to the central axis (v)</em>
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Substituting this values into the given formula we will have;
Cross multiply
Hence Light incident parallel to the central axis is focused at a point 36cm from the surface