A vertical lamp-post, \( 6 \mathrm{~m} \) high, stand at a distance of \( 2 \mathrm{~m} \) from ...

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A vertical lamp-post, \( 6 \mathrm{~m} \) high, stand at a distance of \( 2 \mathrm{~m} \) from a wall, \( 4 \mathrm{~m} \) high. A \( 1.5-\mathrm{m}- \) tall man starts to walk away from= the wall on the other side of the wall, in line with the lamp-post.
\( \mathrm{P} \) The maximum distance to which the man can walk remaining in the shadow is

W
(a) \( \frac{5}{2} m \)
(b) \( \frac{3}{2} \mathrm{~m} \)
(c) \( 4 \mathrm{~m} \)
(d) none of these
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