1
AIPMT 2011 Prelims
+4
-1
Sound waves travel at 350 m/s through a warm air and at 3500 m/s through brass. The wavelength of a 700 Hz acoustic wave as it enters brass from warm air
A
decrease by a factor 10
B
increase by a factor 20
C
increase by a factor 10
D
decrease by a factor 20
2
AIPMT 2010 Prelims
+4
-1
A transverse wave is represented by
y = Asin($$\omega$$t $$-$$ kx). For what value of the wavelength is the wave velocity equal to the maximum particle velocity ?
A
$$\pi A/2$$
B
$$\pi A$$
C
2$$\pi A$$
D
$$A$$
3
AIPMT 2010 Prelims
+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
4
AIPMT 2009
+4
-1
Each of the two strings of length 51.6 cm and 49.1 cm are tensioned separately by 20 N force. Mass per unit length of both the strings is same and equal to 1 g/m. When both the strings vibrate simultaneously the number of beats is
A
7
B
8
C
3
D
5
EXAM MAP
Medical
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