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The optical telescope in the VainuBappu observatory at Kavalur has an objective lens of diameter 2.3.m. What is its angular resolution if the wavelenght of light used is 589 nm? |
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Answer» Solution :`a=2.3m,lambda=589xx10^(-9)m,0=?` The equation for angular resolution is, `theta = (1.22 lambda)/(a)` SUBSTITUTING, `theta=(1.22xx589xx10^(-9))/(2.3)=321.4xx10^(-9)` `theta = 321.4 xx 10^(-7) RAD` NOTE: The angular resolution of human EYE is approximately. `3 xx 10^(-4)` rad |
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