Founded in 1943, Sweden retailer IKEA has grown from a small mail-order operation to a global force in home furnishings with more than 390 stores throughout Europe, North America, Africa, Australia, and Asia. Best known for its contemporary furniture designs, highly trafficked store openings, and quirky advertising, the IKEA Group consists of multiple divisions corresponding to the company’s retail, supply chain, sales, and design and manufacturing functions. What factors likely influenced the development of IKEA’s organizational structure as the company expanded over the years?
Answers
Answer:
The phenomena of bending of light ray when it travels from
one medium to another medium due to change in speed of light
is called “refraction of light”.
According to optics, the medium
in which speed of light is
more is called rarer medium.
Only when the light ray travels along the normal to the surface,
it does not change the direction.
In all other cases, light bends during refraction.
Rarer medium
According to optics, the medium
in which speed of light is
less is called denser medium.
Denser medium
To understand refraction of light through figures, the following terms are important.
At the point of incidence where the light ray
strikes the interface between the two media,
a line drawn perpendicular to the surface is known as normal. It is labeled as N
with the help of dotted line in the figure.
NORMAL
The angle between the incident light ray and
the normal is called angle of incidence. Denoted by Li
ANGLE OF
- INCIDENCE ( i)
The angle between the refracted light ray and
the normal is called angle of refraction. Denoted by Lr
ANGLE OF
- REFRACTION ( r)
When light ray travel from rarer medium
to denser medium,
the refracted light ray
deflects closer to the normal.