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A man of height 150 cm walks at the rate...

A man of height 150 cm walks at the rate of `75 cm//sec`, towards a lighted lamp-post which is 450 cm high. When he is `360 cm` away from the lamp-post , his shadow is shortening at the rate of

A

`37.5 cm//sec`

B

`75.3 cm//sec`.

C

`57.3 cm//sec`.

D

`3.75cm//sec`.

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The correct Answer is:
A
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MARVEL PUBLICATION-APLICATIONS OF DERIVATIVES-MULTIPLE CHOICE QUESTIONS (TEST YOUR GRASP - II : CHAPTER 12)
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