Cbse

CBSE Prelim. 2011 (Hints & Solutions) - decree A Aakash make Code postmortem examination Institute in India for checkup checkup Entrance Exams. A Regd. world power : Aakash Tower, fleck no(prenominal)-4, Sec-11, MLU, Dwarka, New Delhi-110075 Ph.: 011-47623456 facsimile machine : 011-47623472 HINTS & SOLUTIONS for CBSE previous 2011 by Aakash Institute The dimensions of (?0 ?0 ) ? 1 2 1. are ? ?1 1 ? 2 2 (1) ?L T ? ? ? ? ? (3) [L1T] Sol. solvent (4) condition expression is that of amphetamine of light. 2. (2) ? 1 ?1 ? ?L2 T 2 ? ? ? ? ? [LT1] (4) The secondment of inaction of a thin homogeneous perch of business deal M and duration L around an bloc passing d genius its midpoint and perpendicular to its distance is I0. Its moment of inertia well-nigh an axis of rotation passing through nonpareil of its ends and perpendicular to its length is (1) I0 + ML2 (2) I0 ? ML2 2 (3) I0 ? ML2 4 (4) I0 + 2ML2 Sol. Answer (3) I = ICM + Mh2 (Parallel axis theorem) 3. A boy stand at the top of a newspaper column of 20 m height drops a stone. Assuming g = 10 ms2, the velocity with which it hits the purpose is (1) 5.0 m/s (3) 20.0 m/s Sol. Answer (3) v ? 2gh ? 2 ? 10 ? 20 = 20 m/s Aakash Institute - Regd. Office: Aakash Tower, Plot No. 4, Sector-11, MLU, Dwarka, New Delhi-75 Ph.

: 47623456 Fax: 47623472 (1) (2) (4) 10.0 m/s 40.0 m/s Aakash Institute CBSE Prelim. 2011 (Hints & Solutions) - Code A 4. A person of lot 60 kg is wrong a lift of mass 940 kg and presses the give-up the ghost-up-and-go one control panel. The lift starts contemptible upwards with an speedup 1.0 m/s2. If g = 10 ms2, the tension in the keep cable is (1) 1200 N (3) 9680 N (2) (4) 8600 N 11000 N Sol. Answer (4) T = (M + m) (g + a) = (940 + 60) (10 + 1) = 11000 N 5. A eubstance project vertically from the domain reaches a height pertain to earths radius earlier reverting to the earth. The power exerted by the gravitational force is superior (1) At the instant just after the body is projected (2) At the highest position of the body (3) At the instant just...If you trust to get a full essay, score it on our website: Orderessay

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