A at right angles
•
The movement produces oscillating electric and magnetic fields, which travel at right angles to each other in a bundle of light energy called a photon. ... Magnetic and electric fields of an electromagnetic wave are perpendicular to each other and to the direction of the wave
It is so because the steel is more colder than our body.
The number of turns of wire
Answer: Option(d) is the correct option
Explanation:
Grashof number (Gr) is the ratio that is between buoyant force to viscous force persist on fluid on layer of velocity boundary.It is in dimensionless form.
According to the question ,
Laminar flow has
< (Gr) <
as range of boundary layer for free convection.
For transition to take place into turbulent form, it has range of
in terms of free convection.
So, if Grashof number (Gr) is increased then it might tend to change flow from laminar form into turbulent form for free convection.
Other options are incorrect because increasing in Grashof number does not always change the flow mechanism from laminar to turbulent or vice versa neither may cause to laminar flow. Therefore, the correct option is option(d).