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A laader 10 m long rests against a verti...

A laader 10 m long rests against a vertical wall with the lower end on the horizontal ground. The lower end of the ladder is pulled along the ground away from the wall at the rate 3 cm//s. The height of the upper end while it is descending at the rate of 4 cm/s, is :
a)` 4 sqrt3 ` m b)` 5 sqrt3` m c)` 5 sqrt2` m d)` 6 m`

A

` 4 sqrt3 ` m

B

` 5 sqrt3` m

C

` 5 sqrt2` m

D

` 6 m`

Text Solution

Verified by Experts

The correct Answer is:
D
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