Which of the following effects is caused by atmospheric turbulence? a. diffraction of lightb. magnification of imagesc. twinkling of starsd. light pollution

twinkling of stars

The twinkling of the stars is because the light that comes from them is distorted by our planet's atmosphere before it reaches our eyes. As they are very far away and we only see small points of light, this distortion occurs, which is also accentuated the closer an observer on Earth looks towards the horizon.

In general, any light that crosses our atmosphere suffers the consequences of atmospheric turbulence, being the stars more sensitive to this phenomenon due to their incredible distance compared to the planets, whose light does not "flicker".

So, it could be say this phenomenon is a kind of optical illusion because what we really see is a continuous change of position of the star in a tiny region of the sky, which is what makes us perceive that twinkling.

Distance covered = speed x timethe distance traveled going against the stream = distance traveled with the stream.therefore it is the speed and the time that are the variables.as he travels the same distance both ways, speed x time is the same for each way.going upstream his speed is 4 kph; going downstream his speed is 6 kph.therefore we have two simultaneous equations: time upstream x 4 = time downstream x 6time upstream + time downstream = 60 minutestherefore we have the equation: time upstream = 6/10 hour, time downstream therefore = 4/10 hour.distance traveled at 4km/hr in 6/10 hour = 24/10 = 2.4km.check: distance traveled at 6km/hr in 4/10 hour = 24/10 = 2.4km.

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