Physics · 2015
JEE Main · 10 April 2015, Shift 1 · Q26
A telescope has an objective lens of focal length 150 cm and an eyepiece of focal length 5 cm. If a 50 m tall tower at a distance of 1 km is observed…
A telescope has an objective lens of focal length $\displaystyle 150$ cm and an eyepiece of focal length $\displaystyle 5$ cm. If a $\displaystyle 50$ m tall tower at a distance of $\displaystyle 1$ km is observed through this telescope in normal setting, the angle formed by the image of the tower is $\displaystyle \theta$, then $\displaystyle \theta$ is close to :
Official answer
(4)
$\displaystyle 60$°
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JEE Main 2015 Physics question, with the answer from NTA’s final answer key. Where our answers come from.