A 5.5 length of string has a mass of 0. 035 kg. If the tension in the string is 77 N, the speed of a wave on the string is
110 ms-1
165 ms-1
77ms-1
102ms-1
The phase difference between two waves represented by
where x is expressed in metre and t is expressed in second, is approximately
1.07 rad
2.07 rad
0,5 rad
1.5 rad
Standing wavesare produced in a 10 m long stretched string. If the string vibrates in 5 segments and the wave velocity is 20 m/s, the 5 segments and the wave velocity is 20 m/s, the frequency is
10 Hz
5 Hz
4 Hz
2 Hz
The time of reverberation of a room A is one second. What wi be the time (in second) of reverberation of a room, having a the dimensions double of those of room A ?
2
4
1
A stretched string resonates with tuning fork freuency 512 Hz when length of the string is 0.5 m. The length of the string required to vibrate resonantly with a tuning fork of frequency 256 Hz would be
0.25 m
0.5 m
1 cm
2 m
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 gm-1. When both the strings vibrate simultaneously the number of beats is
5
7
8
3
For production of beats the two sources must have
different frequencies and same amplitude
different frequencies
different frequencies, same amplitude and same phase
different frequencies and same phase
The equation of a wave is given by
where x and y are in metre and t in second, then velocity of wave is
0.1 m/s
10 m/s
100 m/s
1000 m/s
Two waves of same frequency and intensity superimpose on each other in opposite phases. After the superposition, the intensity and frequency of waves will
increase
decrease
remain constant
become zero
The wave described by
where x and y are in metre and t in second, is a wave travelling along the
