This Section contains 2paragraphs. Based upon each paragraph, 3 multiple choice questions have to be answered.
Each question has 4 choices(a), (b), (c) and (d), out of which
ONLY ONE is correct.
comprehension-1
A uniform cylinder of radius R is spinned about its axis to the angular velocity and then placed into a
corner. The coefficient of friction between the corner walls and the cylinder is .
13.The number of revolutions before the cylinder stops is.
14. The function on horizontal wall varies with time as
15. The ratio of friction force on the vertical and horizontal wall is
Comprehension-II
Two holes each of area ‘a’ drilled in the wall of a vessel filled with liquid as shown in the figure. The point P is the point where the streams flowing out of the holes intersect. The level of water is maintained in the vessel by regulated supply.
16. The x-coordinate where the streams flowing out of the holes intersect is
17. The y-coordinate where the streams flowing out of the holes intersect is
18. Time taken by a drop of liquid flowing out of upper hole to reach the .point P is t1 and, time taken by .a drop of liquid flowing out of lower hole to reach the point P is t2 • Then the ratio of
t1 and t2 is