The sun is 1.4*10 9 meters in diameter and 1.5*10 11 meters away from Earth, thu

Question

The sun is 1.4*109 meters in diameter and 1.5*1011 meters away from Earth, thus you don't have any trouble discerning its circular shape. If you were standing on Pluto, however, the sun would certainly look very different. Pluto is about 40 times as far from the sun as the Earth is. Could you still image the sun on your retina (image 2 microns), or would it just be twinkling bright, like a shapelessness of a far away star?

Pick one: could imagine it, marginal, couldn't imagine it. Please show calculations for this conclusion

Explanation / Answer

checking the intensities reaching on bothearth and pluto

Use inverse square law.

Since Pluto is 40 times farther from the sun than Earth you do:

40^ 2=1600

I = Powr/.area

Ip/Ie = re^2/rp^2

Intensity on pluto = 1/1600 times of Intensity of Earth

so it wil,be like a like a shapelessness of a far away star

marginal

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