1
NEET 2013 (Karnataka)
MCQ (Single Correct Answer)
+4
-1
The length of the wire between two ends of a sonometer is 100 cm. What should be the positions of two bridges below the wire so that the three segments of the wire have their fundamental frequencies in the ratio 1 : 3 : 5.
A
$${{1500} \over {23}}cm,{{500} \over {23}}cm$$
B
$${{1500} \over {23}}cm,$$ $${{300} \over {23}}cm$$
C
$${{300} \over {23}}cm,{{1500} \over {23}}cm$$
D
$${{1500} \over {23}}cm,{{2000} \over {23}}cm$$
2
NEET 2013 (Karnataka)
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Two sources P and Q produce notes of frequency 660 Hz. each. A listener moves from P to Q with a speed of 1 ms$$-$$1. If the speed of sound is 330 m/s, then the number of beats heard by the listener per second will be
A
4
B
8
C
2
D
zero
3
NEET 2013
MCQ (Single Correct Answer)
+4
-1
If we study the vibration of a pipe open at both ends. then the following statement is not true.
A
All harmonics of the fundamental frequency will be generated.
B
Pressure change will be maximum at both ends.
C
Open end will be antinode.
D
Odd harmonics of the fundamental frequency will be generated.
4
NEET 2013
MCQ (Single Correct Answer)
+4
-1
A wave travelling in the + ve x-direction having displacement along y-direction as 1 m, wavelength 2$$\pi $$ m and frequency of $${1 \over \pi }$$ Hz is represented by
A
y = sin(10$$\pi $$x $$-$$ 20$$\pi $$t)
B
y = sin(2$$\pi $$x + 2$$\pi $$t)
C
y = sin(x $$-$$ 2t)
D
y $$=$$ sin(2$$\pi $$x $$-$$ 2$$\pi $$t)
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