1. What are the units of : pressure, force , area
1 answer:
Pressure- Pascal()
Force- Newton
Area-(Square metre)
<u>Explanation:</u>
- Pressure is force continuous force applied to an object. The applied force is always perpendicular to the surface of the object.
- Force is a push or pulls on an object by an external body where it changes its state from rest to motion.
- Force is said to have both magnitude and direction.
- Area is the portion that shows the scale of a 2D form or configuration in the level. The covering area is its analog on the 2D surface of a 3D object.
You might be interested in
The transmitted intensity will be the quarter of the incident intensity of light, (I = 0.25 I₀), when two linear polarizing filters are placed one behind the other forming the angle of 45°.
<u>Explanation:</u>
Polarizers are used for constraining the direction of propagation of light waves. So depending upon the angle of polarizer, the transmitted rays will follow that angle only and the remaining lights waves at different angles will be reflected back. So basically it works like a filter or optical filters.
So, the transmitted intensity will be less compared to the original intensity of light as the beam will get confined in a particular angle.
The relation between transmitted intensity and incident intensity is given by Malus's law.
Here, I is the transmitted intensity, I₀ is the incident intensity and α is the angle of the polarizer.
In the present case, two polarizers are used with same angle, so the first one termed as polarizer, while the second one will be termed as analyzer. The angle which is used to polarize the intensity of the incident beam is the angle of 45°.
Then, according to Malus's law,
I = I₀ cos² 45 = (I₀/2)×(1/√2)² = I₀/4 =
So, the transmitted intensity will be the quarter of the incident intensity of light, (I = 0.25 I₀), when two linear polarizing filters are placed one behind the other forming the angle of 45°.