1
AIPMT 2002
MCQ (Single Correct Answer)
+4
-1
A disc is rotating with angular speed $$\omega $$. If a child sits on it, what is conserved
A
linear momentum
B
angular momentum
C
kinetic energy
D
potential energy.
2
AIPMT 2002
MCQ (Single Correct Answer)
+4
-1
A circular disc is to be made by using iron and aluminium so that it acquired maximum moment of inertia about geometrical axis. It is possible with
A
aluminium at interior and iron surround to it
B
iron at interior and aluminium surround to it
C
using iron and aluminium layers in alternate order
D
sheet of iron is used at both external surface and aluminium sheet as internal layers.
3
AIPMT 2002
MCQ (Single Correct Answer)
+4
-1
Unit of Stefan's constant is
A
watt m2 K4
B
watt m2/K4
C
watt/m2 K
D
watt/m2K4
4
AIPMT 2002
MCQ (Single Correct Answer)
+4
-1
Consider two rods of same length and different specific heats (S1, S2), conductivities (K1, K2) and area of cross-sections (A1, A2) and both having temperatures T1 and T2 at their ends. If rate of loss of heat due to conduction is equal, then
A
K1A1 = K2A2
B
$${{{K_1}{A_1}} \over {{S_1}}} = {{{K_2}{A_2}} \over {{S_2}}}$$
C
K2A1 = K1A2
D
$${{{K_2}{A_1}} \over {{S_2}}} = {{{K_1}{A_2}} \over {{S_1}}}$$
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