1
NEET 2016 Phase 1
+4
-1
An air column, closed at one end open at the other, resonates with a tuning fork when the smallest length of the column is 50 cm. The next larger length of the column resonating with the same tuning fork is
A
150 cm
B
200 cm
C
66.7 cm
D
100 cm
2
NEET 2016 Phase 1
+4
-1
A uniform rope of length L and mass m1 hangs vertically from a rigid support. A block of mass m2 is attached to the free end of the rope. A transverse pulse of wavelength $$\lambda$$1 is produced at the lower end of the rope. The wavelength of the pulse when it reaches the top of the rope is $$\lambda$$2. The ratio $$\lambda$$2/$$\lambda$$1 is
A
$$\sqrt {{{{m_2}} \over {{m_1}}}}$$
B
$$\sqrt {{{{m_1} + {m_2}} \over {{m_1}}}}$$
C
$$\sqrt {{{{m_1}} \over {{m_2}}}}$$
D
$$\sqrt {{{{m_1} + {m_2}} \over {{m_2}}}}$$
3
AIPMT 2015
+4
-1
4.0 g of a gas occupies 22.4 litres at NTP. The specific heat capacity of the gas at constant volume is 5.0 J K$$-$$1 mol$$-$$1. If the speed of sound in this gas at NTP is 952 m s$$-$$1, then the heat capacity at constant pressure is
(Take gas constant R $$=$$ 8.3 J K$$-$$1 mol$$-$$1)
A
7.0 J K$$-$$1 mol$$-$$1
B
8.5 J K$$-$$1 mol$$-$$1
C
8.0 J K$$-$$1 mol$$-$$1
D
7.5 J K$$-$$1 mol$$-$$1
4
AIPMT 2015
+4
-1
Out of Syllabus
A source of sound S emitting waves of frequency 100 Hz and an observer O are located at some distance from each other. The source is moving with a speed of 19.4 m s$$-$$1 at an angle of 60o with the source observer line as shown in the figure. The observer is at rest. The apparent frequency observed by the observer (velocity of sound in air 330 m s$$-$$1), is
A
106 Hz
B
97 Hz
C
100 Hz
D
103 Hz
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