NCERT Exemplar I — task. Science CBSE, Class 9.

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1. The human eye can focus objects at different distances by adjusting the focal length of the eye lens. This is due to

\(\pi\ r\)
\(2\ r\)
\(Zero\)
\(2\ \pi\ r\)

2. A body is thrown vertically upward with velocity u, the greatest height h to which it will rise is,

\(\frac{u^2}{g}\)
\(\frac{u}{2g}\)
\(\frac{u^2}{2g}\)
\(\frac{u}{g}\)

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