CBSE
Multiple Choice QuestionsA cord attached to a vibrating tuning fork is divided into six segments under tension of 36 N. It will be divided into four segments, if the tension is
48N
81N
24N
16N
A resonance air column of length 40 cm resonates with tunning fork of frequency 450Hz. Ignoring end corrections , the velocity of sound in air will be
1020m/s
920m/s
820m/s
720m/s
The equation of travelling wave is y= 60 cos (1800 t-6x) where y is in micron and t in second and x in metre. The ratio of maximum particle velocity to velocity of wave propagation is
3.6
3.6
A steel wire 0.5 m long has a total mass 0.01 kg and stretched with a tension of 800 N. The frequency with which it vibrates in its fundamental note will be
4Hz
2Hz
200Hz
160Hz
In a sinusoidal wave, the time required for a particular point to move from maximum displacement to zero displacement is 0.170.The frequency of the wave will be
2.94Hz
0.73Hz
0.36Hz
1.47Hz
A girl is swinging on a swinging plate form in sitting position when the girl stands up then the period of swinging?
Will not change
Will depend on height of girl
Will be longer
Will be shorter
A particular of mass m is executing oscillation about the origin on X- axis. Its potential energy is V(x) = K |x|3. Where K is a positive constant. If the amplitude of oscillation is a, then its time period T is proportional to
a
a3/2
Standing wave are produced in a 10 m long stretched string. If the string vibrates in 5 segments and the wave velocity is 20 m/s. The frequency is
10Hz
5Hz
4Hz
2Hz
The displacement of the motion of a particle is represent by a equation . The motion of the particle is
SHM with amplitude
SHM with amplitude A+B
SHM with amplitude A
Oscillatory but not in SHM
The displacement of a particle along the x-axis is given by x = a sin2 ωt. The motion of the particle corresponds to
Simple harmonic motion of frequency ω/π
Simple harmonic motion of frequency 3ω/2π
non-simple harmonic motion
Simple harmonic motion of frequency ω/2π
