Assume that light of wavelength `6000 Å` is coming from a star. What is the limit of resolution of a telescope whose objective has a diameter of 100 inch ? (NCERT Solved example)
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Diameter of onjective of telescope, `D = 100 "inch" = 100 xx 2.54 cm = 254 cm` `lambda = 6000 Å = 6000 xx 10^(-8)cm = 6 xx 10^(-5) cm` Limit of resolution of telescope, `d theta = (1.22 lambda)/(D) = (1.22 xx 6 xx 10^(-5))/(254)` `= 2.9 xx 10^(-7)` radian
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