1
AIPMT 2004
MCQ (Single Correct Answer)
+4
-1
Three particles, each of mass m gram, are situated at the vertices of an equilateral triangle ABC of side $$l$$ cm (as shown in the figure). The moment of inertia of the system about a line AX perpendicular to AB and in the plane of ABC, in gram-cm2 units will be

AIPMT 2004 Physics - Rotational Motion Question 40 English
A
$${3 \over 4}$$m$$l$$2
B
2m$$l$$2
C
$${5 \over 4}$$m$$l$$2
D
$${3 \over 2}$$m$$l$$2
2
AIPMT 2004
MCQ (Single Correct Answer)
+4
-1
The unit of permittyvity of free space, $${\varepsilon _0}$$, is
A
coulomb/newton-metre
B
newton-metre2/coulomb2
C
coulomb2/newton-metre2
D
coulomb2/(newton-metre)2
3
AIPMT 2004
MCQ (Single Correct Answer)
+4
-1
If $$\left| {\overrightarrow A \times \overrightarrow B } \right| = \sqrt 3 \overrightarrow A .\overrightarrow B $$ then the value of $$\left| {\overrightarrow A + \overrightarrow B } \right|$$ is
A
(A2 + b2 + AB)1/2
B
$${\left( {{A^2} + {B^2} + {{AB} \over {\sqrt 3 }}} \right)^{1/2}}$$
C
A + B
D
(A2 + B2 + $${\sqrt 3 }$$AB)1/2.
4
AIPMT 2004
MCQ (Single Correct Answer)
+4
-1
A block of mass m is placed on a smooth wedge of inclination $$\theta $$. The whole system is accelerated horizontally so that the block does not slip on the wedge. The force exerted by the wedge on the block will be (g is acceleration due to gravity)
A
mg cos$$\theta $$
B
mg sin$$\theta $$
C
mg
D
mg/cos $$\theta $$