1
AIPMT 2015
MCQ (Single Correct Answer)
+4
-1
Change Language
The fundamental frequency of a closed organ pipe of length 20 cm is equal to the second overtone of an organ pipe open at both the ends. The length of organ pipe open at both the ends is
A
120 cm
B
140 cm
C
80 cm
D
100 cm
2
AIPMT 2015
MCQ (Single Correct Answer)
+4
-1
Change Language
A particle is executing a simple harmonic motion. Its maximum acceleration is $$\alpha $$ and maximum velocity is $$\beta $$. Them, its time period of vibration will be
A
$${{{\beta ^2}} \over \alpha }$$
B
$${{2\pi \beta } \over \alpha }$$
C
$${{{\beta ^2}} \over {{\alpha ^2}}}$$
D
$${\alpha \over \beta }$$
3
AIPMT 2015
MCQ (Single Correct Answer)
+4
-1
Change Language
A string is stretched between fixed points separated by 75.0 cm. It is observed to have resonant frequencies of 420 Hz and 315 Hz. There are no other resonant frequencies between these two. The lowest resonant frequency for this string is
A
10.5 Hz
B
105 Hz
C
155 Hz
D
205 Hz
4
AIPMT 2015
MCQ (Single Correct Answer)
+4
-1
Change Language
A circuit contains an ammeter, a battery of 30 V and a resistance 40.8 ohm all connected in series. If the ammeter has a coil of resistance 480 ohm and a shunt of 20 ohm, the reading in the ammeter will be
A
2A
B
1A
C
0.5 A
D
0.25 A