Ncert exemplar problems class 12 maths| Application of derivatives|Chapter 6|Solutions|
Here we are discussing some ncert exemplar problems chapter 6. Questions related to derivatives as a rate measure based on exercise 6.1 of ncert.
35. The sides of an equilateral triangle are increasing at the rate of 2cm/sec. The rate at which the area increases, when side is 10 cm is:
(A) 10 cm2/s (B) 3 cm2/s (C) 10 root3 cm2/s (D)10/3cm2/s
36. A ladder, 5 meter long, standing on a horizontal floor, leans against a vertical wall. If the top of the ladder slides downwards at the rate of 10 cm/sec, then the rate at which the angle between the floor and the ladder is decreasing when lower end of ladder is 2 metres from the wall is:
(A)1/10 radian/sec (B)1/20 radian/sec (C) 20 radian/sec
(D) 10 radian/sec
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