Answer:
Refraction is the bending of light (it also happens with sound, water and other waves) as it passes from one transparent substance into another.
Light refracts whenever it travels at an angle into a substance with a different refractive index (optical density).
<h3><em>when </em><em>a </em><em>light </em><em>ray </em><em>goes </em><em>from </em><em>a </em><em>medium </em><em>with </em><em>higher </em><em>refractive </em><em>index </em><em>to </em><em>a </em><em>medium </em><em>with </em><em>lower </em><em>refractive </em><em>index.</em><em>.</em><em> </em><em>it </em><em>gets </em><em>deviated </em><em>from </em><em>the </em><em>normal.</em></h3>
<h2><em>hence.</em><em>.</em><em>.</em><em> </em><em>the </em><em>statement</em><em> </em><em>is </em><em>true.</em><em>.</em><em>.</em></h2>
hope helpful~
<span>So
the mural has an area of 18m squared
=> A = 18m^2
in getting the area of a square we use to formula = s^2, but since the area is
already given, we need to find the value
of each sides of the square. Thus, we simply need to do it backward.
we need to find the square root of the area
=> square root of 18m^2
=> 4.24m
Therefore that mural has a sides of approximately 4.24 meters</span>
Answer:
Explanation:
The pressure of a liquid is the rate of the force applied by the liquid on a surface per unit area of the surface.
i.e P = 
where P is the pressure, F is the force and A is the area.
The depth of the liquid determines its pressure at a definite lower point. As the pressure of a liquid at the bottom of a its container is greater than the pressure at the top of the liquid.
Thus,
P = σhg
where P is the pressure, σ is the density of the liquid, h is the height and g is the force of gravity.
It is measured in Pascals or N
.
The pressure of liquid has a lot of applications, viz: siphon, force pump, lift pump etc.
Visual aids are tools that help to make an issue or lesson clearer or easier to understand and know (pictures, models, charts, maps, videos, slides, real objects etc.). ... Visual aids are those devices which are used in classrooms to encourage students learning process and make it easier and interesting.
