1
AIPMT 2010 Prelims
MCQ (Single Correct Answer)
+4
-1
A tuning fork of frequency 512 Hz makes 4 beats per second with the vibrating string of a piano. The beat frequency decreases to 2 beats per sec when the tension in the piano string is slightly increased. The frequency of the piano string before increasing the tension was
A
510 Hz
B
514 Hz
C
516 Hz
D
508 Hz
2
AIPMT 2010 Prelims
MCQ (Single Correct Answer)
+4
-1
The period of oscillation of a mass M suspended from a strong of negligible mass is T. If along with it another mass M is also suspended, the period of oscillation will now be
A
T
B
$${T \over {\sqrt 2 }}$$
C
2T
D
$$\sqrt 2 T$$
3
AIPMT 2010 Prelims
MCQ (Single Correct Answer)
+4
-1
If $$\Delta $$U and $$\Delta $$W represent the increase in internal energy and work done by the system respectively in a thermodynamical process, which of the following is true ?
A
$$\Delta $$U = $$-$$$$\Delta $$W, in an adiabtic process
B
$$\Delta $$U = $$\Delta $$W, in an isothermal process
C
$$\Delta $$U = $$\Delta $$W, in an adiabatic process
D
$$\Delta $$U = $$-$$ $$\Delta $$W, in an isothermal process
4
AIPMT 2010 Prelims
MCQ (Single Correct Answer)
+4
-1
A square surface of side L meter in the plane of the paper is placed in a uniform electric field $$E$$(volt/m) acting along the same plane at an angle $$\theta $$ with the horizontal side of the square as shown in figurre.

AIPMT 2010 Prelims Physics - Electrostatics Question 51 English
The electric flux linked to the surface, in units of volt m is
A
EL2
B
EL2cos$$\theta $$
C
EL2sin$$\theta $$
D
zero