A spy satellite orbiting at 160 km above the Earth’s surface has a lens that can resolve objects on the ground as small as 20 cm. What is the effective diameter of the lens as determined by diffraction consideration alone? Assume λ = 550 nm
Added by Ruben C.
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6 m Wavelength (λ) = 550 nm = 550 x 10^-9 m Minimum resolvable angle (θ) = 1.22 λ / D Show more…
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A spy satellite orbiting at 160 km above Earth's surface has a lens with a focal length of 3.6 m and can resolve objects on the ground as small as 30 cm. For example, it can easily measure the size of an aircraft's air intake port. What is the effective diameter of the lens as determined by diffraction consideration alone? Assume λ = 550 nm.
Abid H.
A spy satellite orbiting at 160 $\mathrm{km}$ above Earth's surface has a lens with a focal length of 3.6 $\mathrm{m}$ and can resolve objects on the ground as small as 30 $\mathrm{cm} .$ For example, it can easily measure the size of an air- craft's air intake port. What is the effective diameter of the lens as determined by diffraction consideration alone? Assume $\lambda=550 \mathrm{nm} .$
A spy satellite is reputed to be able to resolve objects 10. cm apart while operating $197 \mathrm{km}$ above the surface of Earth. What is the diameter of the aperture of the telescope if the resolution is only limited by the diffraction effects? Use $550 \mathrm{nm}$ for light.
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