A planet is observed by an astronomical teles | vedclass

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(D) Given: Focal length of objective lens $f_0 = 16 \, m$. Focal length of eye-piece $f_e = 2 \, cm = 0.02 \, m$.$1$. The length of the telescope tube

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All of the above are correct.

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(D) Given: Focal length of objective lens $f_0 = 16 \, m$. Focal length of eye-piece $f_e = 2 \, cm = 0.02 \, m$.$1$. The length of the telescope tube for normal adjustment is $L = f_0 + f_e = 16 + 0.02 = 16.02 \, m$. Thus,option $A$ is correct.$2$. The angular magnification $m$ for an astronomical telescope is given by $m = -f_0 / f_e = -16 / 0.02 = -800$. Thus,option $B$ is correct.$3$. In an astronomical telescope,the final image formed is inverted with respect to the object. Thus,option $C$ is correct.Since all statements are correct,the correct answer is $D$.

$A$ planet is observed by an astronomical telescope having an objective lens of focal length $16 \, m$ and an eye-piece of focal length $2 \, cm$. Find the correct statement.

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