Q1.A student tunes his guitar by striking a 120 Hertz with a tuning fork, and simultaneously plays the 4th string on his guitar. By keen observation, he hears the amplitude of the combined sound oscillating thrice per second. Which of the following frequencies is the most likely the frequency of the 4th string on his guitar?.
Answer : Option BExplaination / Solution: No Explaination.
Q2.A
transverse wave moves from a medium A to a medium B. In medium A, the velocity
of the transverse wave is 500 ms-1 and the wavelength is 5 m. The
frequency and the wavelength of the wave in medium B when its velocity is 600
ms-1, respectively are
Answer : Option DExplaination / Solution: No Explaination.
Q3.For a particular tube, among six harmonic frequencies below 1000 Hz, only four harmonic frequencies are given : 300 Hz, 600 Hz, 750 Hz and 900 Hz. What are the two other frequencies missing from this list?.
Answer : Option BExplaination / Solution: No Explaination.
Q7. A person standing between two parallel hills
fires a gun and hears the first echo after t1
sec and the second echo after t2
sec. The distance between the two hills is
Answer : Option DExplaination / Solution: No Explaination.
Q8.An air column in a pipe which is closed at one end, will be in resonance with the vibrating body of frequency 83Hz. Then the length of the air column is
Answer : Option CExplaination / Solution: No Explaination.
Q9.The
displacement y of a wave travelling
in the x direction is given by y =
(2x10-3) sin(300t-2x+π/4), where x
and y are measured in metres and t insecond. The speed of the wave is
Answer : Option AExplaination / Solution: No Explaination.
Q10.Consider
two uniform wires vibrating simultaneously in their fundamental notes. The
tensions, densities, lengths and diameter of the two wires are in the ratio 8 :
1, 1 : 2, x : y and 4 : 1 respectively. If the note of the higher pitch has a
frequency of 360 Hz and the number of beats produced per second is 10, then the
value of x : y is
Answer : Option AExplaination / Solution: No Explaination.
Total Question/Mark :
Scored Mark :
Mark for Correct Answer : 1
Mark for Wrong Answer : -0.5
Mark for Left Answer : 0