1
AIPMT 2009
MCQ (Single Correct Answer)
+4
-1
The internal energy change in a system that has absorbed 2 kcal of heat and done 500 J of work is
A
6400 J
B
5400 J
C
7900 J
D
8900 J
2
AIPMT 2009
MCQ (Single Correct Answer)
+4
-1
In thermodynamic processes which of the following statements is not true ?
A
In an isochoric process pressure remains constant.
B
In an isothermal process the temperature remains constant.
C
In an adiabatic process PV$$\gamma $$ = constant.
D
In an adiabatic process the system is insulated from the surroundings.
3
AIPMT 2009
MCQ (Single Correct Answer)
+4
-1
A simple pendulum performs simple harmonic motion about x = 0 with an amplitude a and time period T. The speed of the pendulum at x = a/2 will be
A
$${{\pi a} \over T}$$
B
$${{3{\pi ^2}a} \over T}$$
C
$${{\pi a\sqrt 3 } \over T}$$
D
$${{\pi a\sqrt 3 } \over {2T}}$$
4
AIPMT 2009
MCQ (Single Correct Answer)
+4
-1
Which one of the following equations of motion represents simple harmonic motion ?

where k, k0, k1 and a are all positive.
A
Acceleration = $$-$$ k (x + a)
B
Acceleration = k(x + a)
C
Acceleration = $$-$$ $$\omega $$2x
D
Acceleration = $$-$$ k0x + k1x2
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