Three flat layers of transparent material are stacked upon one another. The top layer has index of refraction n1, the middle has
n2 and the bottom one has n3. If n1 > n2 > n3, and if a ray of light strikes the top layer at an angle of incidence, in which layer is the angle of refraction the greatest? Why?
a. the bottom layer
b. the top layer
c. Once the ray enters the touching layers, the angle of refraction remains constant.
d. the middle layer
a. the bottom layer
b. the top layer
c. Once the ray enters the touching layers, the angle of refraction remains constant.
d. the middle layer
1 answer:
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Answer:Zero
Explanation:
Given child moves the box with constant velocity over his head .
Force acting on box due to gravity is equal to his weight
Displacement of the box is Perpendicular to the direction of Applied force
Work done is given by
here is the angle between Force and displacement which is
so work done is zero