1
AIPMT 2002
MCQ (Single Correct Answer)
+4
-1
A mass is suspended separately by two different springs in (successive order then time periods is t1 and t2 respectively, If it is connected by both spring as shown in figure then time period is t0 , the correct relation is

AIPMT 2002 Physics - Oscillations Question 16 English
A
$$t_0^2 = t_1^2 + t_2^2$$
B
$$t_0^{ - 2} = t_1^{ - 2} + t_2^{ - 2}$$
C
$$t_0^{ - 1} = t_1^{ - 1} + t_2^{ - 1}$$
D
$${t_0} = {t_1} + {t_2}$$
2
AIPMT 2002
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
A whistle revolves in a circle with angular speed $$\omega $$ = 20 rad/s using a string of length 50 cm. If the frequency of sound from the whistle is 385 Hz, then what is the minimum frequency heard by an observer which is far away from the centre (velocity of sound $$=$$ 340 m/s)
A
385 Hz
B
374 Hz
C
394 Hz
D
333 Hz.
3
AIPMT 2002
MCQ (Single Correct Answer)
+4
-1
A wave travelling in positive X-direction with a $$=$$ 0.2 ms$$-$$2, velocity = 360 ms$$-$$1 and $$\lambda $$ $$=$$ 60 m, then correct expression for the wave is
A
$$y = 0.2\sin \left[ {2\pi \left( {6t + {x \over {60}}} \right)} \right]$$
B
$$y = 0.2\sin \left[ {\pi \left( {6t + {x \over {60}}} \right)} \right]$$
C
$$y = 0.2\sin \left[ {2\pi \left( {6t - {x \over {60}}} \right)} \right]$$
D
$$y = 0.2\sin \left[ {\pi \left( {6t - {x \over {60}}} \right)} \right]$$
4
AIPMT 2002
MCQ (Single Correct Answer)
+4
-1
Identical charges ($$-$$q) are placed at each corners of cube of side b then electrostatic potential energy of charge (+q) which is placed at centre of cube will be
A
$${{ - 4\sqrt 2 {q^2}} \over {\pi {\varepsilon _0}b}}$$
B
$${{ - 8\sqrt 2 {q^2}} \over {\pi {\varepsilon _0}b}}$$
C
$${{ - 4\,{q^2}} \over {\sqrt 3 \,\pi {\varepsilon _0}b}}$$
D
$${{8\sqrt 2 \,{q^2}} \over {4\,\pi {\varepsilon _0}b}}$$
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