1
AIPMT 2006
MCQ (Single Correct Answer)
+4
-1
A uniform rod AB of length $$l$$ and mass m is free to rotate about point A. The rod is released from rest in the horizontal position. Given that the moment of inertia of the rod about A is ml2/3, the initial angular acceleration of the rod will be

A
$${{mgl} \over 2}$$
B
$${3 \over 2}gl$$
C
$${{3g} \over {2l}}$$
D
$${{2g} \over {3l}}$$
2
AIPMT 2006
MCQ (Single Correct Answer)
+4
-1
The moment of inertia of a uniform circular disc of radius R and mass M about an axis touching the disc at its diameter and normal to the disc
A
$${1 \over 2}$$MR2
B
MR2
C
$${2 \over 5}M{R^2}$$
D
$${3 \over 2}M{R^2}$$
3
AIPMT 2006
MCQ (Single Correct Answer)
+4
-1
The earth is assumed to be a sphere of radius R. A platform is arranged at a height R from the surface of the earth. The escape velocity of a body from this platform is fv, where v is its escape velocity from the surface of the Earth. The value of f is
A
1/2
B
$$\sqrt 2 $$
C
1/$$\sqrt 2 $$
D
1/3
4
AIPMT 2006
MCQ (Single Correct Answer)
+4
-1
A black body at 1227oC emits radiations with maximum intensity at a wavelength of 5000 $$\mathop A\limits^ \circ $$. If the temperature of the body is increased by 1000oC, the maximum intensity will be observed at
A
3000 $$\mathop A\limits^ \circ $$
B
4000$$\mathop A\limits^ \circ $$
C
5000$$\mathop A\limits^ \circ $$
D
6000$$\mathop A\limits^ \circ $$
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