2nd PUC Mathematics Series 11 December 3, 2020December 22, 2020wefru PUC Science 2nd Year Mathematics Series-11 quiz 0 Created on December 02, 2020 By wefru 2nd PUC Mathematics Series 11 TEST YOUR KNOWLEDGE OF SCIENCE 1 / 10 101. f(x) = 3x2 + 6x + 8, x ∈ R 0 1 2 does not exist 2 / 10 102. The radius of a cylinder is increasing at the rate of 3 m/s and its height is decreasing at the rate of 4 m/s. The rate of change of volume when the radius is 4 m and height is 6 m, is 80π cu m/s 10π cu m/s 90π cu m/s 0π cu m/s 3 / 10 103. A particle is moving along the curve x = at2 + bt + c. If ac = b2, then particle would be moving with uniform rotation velocity acceleration retardation 4 / 10 104. The distance ‘s’ metres covered by a body in t seconds, is given by s = 3t2 – 8t + 5. The body will stop after 4/3 s 7/3 s 0 22 5 / 10 105. The function f(x) = cot-1 x + x increases in the interval (-∞, ∞) (-∞, 7) (-∞, 8) (-∞, 9) 6 / 10 106. The length of the longest interval, in which the function 3 sin x – 4sin3x is increasing, is π/3 π/7 π/8 π/9 7 / 10 107. The coordinates of the point on the parabola y2 = 8x which is at minimum distance from the circle x2 + (y + 6)2 = 1 are (2, -4) (7, -4) (62, -4) 0 8 / 10 108. The function f(x) = x + 4/x has a local maxima at x = 2 and local minima at x = -2 local minima at x = 2, and local maxima at x = -2 local minima at x = 45892, and local maxima at x = -2 local minima at x = 98745622, and local maxima at x = -2012587 9 / 10 109. Find the height of a cylinder, which is open at the top, having a given surface area, greatest volume and of radius r. r rrr rr rrrrr 10 / 10 110. The area of parallelogram whose adjacent sides are i^−2j^+3k^ and 2i^+j^−4k^ is 5√6 7√6 8√6 0 Your score isThe average score is 0% LinkedIn Facebook Twitter VKontakte 0% Restart quiz