C-10-Q156mediumsingle_mcq

The shadow of a vertical pole on level ground is longest when the sun's elevation is—

a $90^\circ$
b $60^\circ$
c $45^\circ$
dclose to $0^\circ$

ব্যাখ্যা

Shadow length is $h \cot\theta$ , where $\theta$ is the sun's elevation. As $\theta$ approaches $0^\circ$ , $\cot\theta$ grows without bound, so the shadow becomes longest near sunrise/sunset when the sun is low.

এই অধ্যায়ের আরও প্রশ্ন

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Chapter 10: Distance and Elevation — সব প্রশ্ন দেখুন (160টি) →

The shadow of a vertical pole on level ground is longest when the sun's elevation is—

90^\circ

60^\circ

45^\circ

dclose to

0^\circ