Scientist Jordan makes a discovery and publishes the results for other scientists to read. Scientist Leesha tries to repeat the
1 answer:
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The dashed line represents the<u> normal </u>to the boundary
Explanation:
Refraction is a phenomenon that occurs when a ray of light crosses the interface between two mediums.
When this occurs, the ray of light changes direction and speed.
The new direction of the ray of light is given by Snell's law:
where
is the index of refraction of the 1st medium
is the index of refraction of thre 2nd medium
is the angle of incidence, which is the angle between the direction of the incident ray and the normal to the boundary
is the angle of refraction, which is the angle between the direction of the refracted ray and the normal to the boundary
The index of refraction of a medium is the ratio between the speed of light in a vacuum (c) and the speed of light in that medium (v):
The figure in the question is missing, however you can find it in attachment.
We see that the dashed line is perpendicualr to the boundary between the two mediums, so it represents the normal.
So, the correct answer is
Normal
We note that in this case the ray of light bends towards the normal, this means that , therefore the second medium has a larger index of refraction (
).
Learn more about refraction:
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Initial velocity, u = 4 m/s
acceleration due to gusts of wind = 3 m/s^2
time, t = 1 min = 60 s
Let distance travelled = S
From equation of motion,
Thus, the boat would have traveled 5640m after gusts picked up.
acceleration due to gusts of wind = 3 m/s^2
time, t = 1 min = 60 s
Let distance travelled = S
From equation of motion,
Thus, the boat would have traveled 5640m after gusts picked up.
To solve this problem it is necessary to apply the law of Malus which describes the change in the Intensity of Light when it crosses a polarized surface.
Mathematically the expression is given as
Where,
= Initial Intensity
I = Final Intensity after pass through the polarizer
= Angle between the polarizer and the light
Since it is sought to reduce the intensity by half the relationship between the two intensities will be given as
Using the Malus Law we have,
Angle with respect to maximum is