For the flow over a flat plate value of the critical Reynold's Number is 5*10 5
for the Re>5*10 5 the flow is known to be turbulent
and if Re<5*10 5 then the flow is Laminar
In the first row Reynold's number is 54694.17 (> 5*10 5 ) hence the flow is turbulent in this observation
In the second row, Reynold's number is 4600.745 (< 5*10 5 ) hence the flow is Laminar in this observation
In the second row, Reynold's number is 3910.633 (< 5*10 5 ) hence the flow is Laminar in this observation
The Kepler telescope π as shown in the figure consists of two converging Lens, one is called Objective lens and another is called eyepiece Lens ....
hence , the numerical aperture NA = 0.159
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