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Based on New Pattern<br />
<strong>IIT</strong>-<strong>JEE</strong> 2011<br />
XtraEdge Test Series # 8<br />
Time : 3 Hours<br />
Syllabus :<br />
Physics : Full Syllabus, Chemistry : Full Syllabus, Mathematics : Full syllabus<br />
Instructions :<br />
Section - I<br />
• Question 1 to 4 are multiple choice questions with only one correct answer. +3 marks will be awarded for correct<br />
answer and -1 mark for wrong answer.<br />
• Question 5 to 9 are multiple choice questions with multiple correct answer. +4 marks and -1 mark for wrong answer.<br />
Section - II<br />
• Question 10 to 11 are Column Matching type questions. +8 marks will be awarded for the complete correctly<br />
matched answer and No Negative marks for wrong answer. However, +2 marks will be given for a correctly<br />
marked answer in any row.<br />
Section - III<br />
• Question 12 to 19 are numerical response type questions. +4 marks will be awarded for correct answer and -1 mark<br />
for wrong answer.<br />
PHYSICS<br />
Questions 1 to 4 are multiple choice questions. Each<br />
question has four choices (A), (B), (C) and (D), out of<br />
which ONLY ONE is correct.<br />
1. Velocity of block 2 shown in figure is -<br />
u<br />
(A)<br />
3u<br />
2<br />
(B)<br />
3u<br />
2<br />
u<br />
1<br />
(C)<br />
60º<br />
3<br />
3u<br />
2<br />
2<br />
(D) 2u<br />
2. Which of the following restoring force can give rise<br />
to S.H.M -<br />
(A) F = 2x<br />
(B) F = 2 – 4x<br />
(C) F = – 2x 2<br />
(D) None of these<br />
3. A disk of mass M and radius R is rotating about its<br />
axis with angular velocity ω. Axis of disk is rotated<br />
by 90º in time ∆t. Average torque acting on disk is -<br />
2<br />
2Mω<br />
(A)<br />
∆t<br />
MR<br />
(C)<br />
2∆ω<br />
2<br />
t<br />
(B)<br />
MR 2 ω<br />
2∆t<br />
(D) Zero<br />
4. Select the incorrect statement -<br />
(A) The velocity of the centre of mass of an isolated<br />
system must stay constant<br />
(B) Only a net external force can change the<br />
velocity of the center of mass of a system<br />
(C) A system have non-zero kinetic energy but zero<br />
linear momentum<br />
(D) F<br />
→ ext<br />
d → v<br />
= m + → v dt<br />
dm is true for all situation<br />
dt<br />
Questions 5 to 9 are multiple choice questions. Each<br />
question has four choices (A), (B), (C) and (D), out of<br />
which MULTIPLE (ONE OR MORE) is correct.<br />
5. Velocity of a particle moving on straight line varies<br />
as 2<br />
1 th<br />
power of displacement. Then -<br />
(A) K.E. ∝ S (B) P ∝ S 1/2<br />
(C) a = constant (D) S ∝ t 2<br />
XtraEdge for <strong>IIT</strong>-<strong>JEE</strong> 63 DECEMBER 2009
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