1
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
$${{{K_2}{A_1}} \over {{S_2}}} = {{{K_1}{A_2}} \over {{S_1}}}$$
2
AIPMT 2002
MCQ (Single Correct Answer)
+4
-1
An object of mass 3 kg is at rest. Now a force of $$\overrightarrow F $$ = 6t2 $$\widehat i$$ + 4t $$\widehat j$$ is applied on the object then velocity of object at t = 3 sec. is
A
18$$\widehat i$$ + 3$$\widehat j$$
B
18$$\widehat i$$ + 6$$\widehat j$$
C
3$$\widehat i$$ + 18$$\widehat j$$
D
18$$\widehat i$$ + 4$$\widehat j$$
3
AIPMT 2002
MCQ (Single Correct Answer)
+4
-1
A lift of mass 1000 kg which is moving with acceleration of 1 m/s2 in upward direction, then the tension developed in string which is connected to lift is
A
9800 N
B
10,800 N
C
11,000 N
D
10,000 N.
4
AIPMT 2002
MCQ (Single Correct Answer)
+4
-1
A block of mass 10 kg placed on rough horizontal surface having coefficient of friction m = 0.5, if a horizontal force of 100 N acting on it then acceleration of the block will be
A
10 m/s2
B
5 m/s2
C
15 m/s2
D
0.5 m/s2.
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