The minimum feature size, in kilometers, on the surface of Mars that your telescope can resolve for you is 140km.
<h3>What is telescope?</h3>
Telescope is device through which we can see the distant objects very clearly as it seems like they are some meters away.
Distance of the Mars from the Earth D = 1.99 x 10¹¹ m
Diameter of telescope's objective lens d = 0.977 m
The wavelength of light λ in m, λ = 563nm = 563 x 10⁻⁹ m
The distance y or the minimum feature size =1.22λD/d
Substitute the value, we get
y = 1.22 x 563 x 10⁻⁹ x 1.99 x 10¹¹ /0.977
y = 140 km (approximately)
Thus, the minimum feature size, in kilometers, on the surface of Mars that your telescope can resolve for you is 140km.
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