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Assume that light of wavelength 600 Å is...

Assume that light of wavelength 600 Å is coming from a star. What is the limit of resolution of telescope whose objective has a diameter of 100 inch?

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The limit of resolution of a telescope, `dtheta = (1.22lambda)/(D)`
`D=100 :"inch"=254cm " " [therefore1"inch"=2.54cm]`
`lambda = 6000 Å=6000xx10&^(-10) m`
`dtheta = (1.22 xx 6000 xx 10^(-10))/(254 xx 10^(-2)) = 2.9 xx 10^(-7)`
`d theta = 2.9 xx 10^(-7) rad`
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