The minimum thickness of the oil slick at that spot is 313 nm.
The refractive index of the oil is 1.3,
- the light from the air-oil interface will have a stage change of
- the light for the oil-water interface will have a stage change of .
Therefore, the interface between the two rays will give two stage change or zero stage change.
The position for the constructive interface :
Where, n = refractive index of oil
m = order
So, for the minimum thickness (i.e. m = 1)
What is The refractive index?
A primal physical property of a substance, it is usually used to identify a particular substance, confirm its chastity, or scale its concentration is called refractive index.
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The door's moment of inertia for rotation about a vertical axis inside the door, 14 cm from one edge is 4.205 kgm².
<h3>
Momnet of inertia about a vertical axis inside the door</h3>
The door's moment of inertia for rotation about a vertical axis inside the door, 14 cm from one edge is calculated as follows;
where;
- I, cm is the moment of inertia about central axis
- d is the distance from the edge
- M is mass of the door
<h3>Moment of inertia</h3>
Thus, the door's moment of inertia for rotation about a vertical axis inside the door, 14 cm from one edge is 4.205 kgm².
The complete question is below;
A 25kg solid door is 220 cm tall, 91 cm wide. What is the door's moment of inertia for rotation about a vertical axis inside the degr, 14 cm from one edge.
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D) sepals
other options are ridiculous