Physics-
General
Easy
Question
A 100 m long rod of density 
and having Young’s modules 
, is clamped at one end. It is hammered at the other free end. The longitudinal pulse goes to right end, gets reflected and again returns to the left end. How much time, the pulse take to go back to initial point
- 0.1 sec
- 0.2 sec
- 0.3 sec
- 2 sec
The correct answer is: 0.2 sec
Related Questions to study
Physics-
The following fig. show a snapshot of a vibrating string at null. The particle P is observed moving up with velocity 
. The tangent at P makes an angle of 600 with the x-axis the equation of the wave is
The following fig. show a snapshot of a vibrating string at null. The particle P is observed moving up with velocity . The tangent at P makes an angle of 600 with the x-axis the equation of the wave is
Physics-General
Physics-
The velocity of a transverse wave in a stretched wire is 100ms–1. If the length of wire is doubled and tension in the string is also doubled, the final velocity of the transverse wave in the wire is
The velocity of a transverse wave in a stretched wire is 100ms–1. If the length of wire is doubled and tension in the string is also doubled, the final velocity of the transverse wave in the wire is
Physics-General
Physics-
A sonometer has 25 forks. Each produces 4 beats with the next one. If the maximum frequency is 288 Hz, which is the frequency of last fork. The lowest frequency is
A sonometer has 25 forks. Each produces 4 beats with the next one. If the maximum frequency is 288 Hz, which is the frequency of last fork. The lowest frequency is
Physics-General
Physics-
A window whose area is 2 m2 open on a street where the street noise results at the window an intensity level of 80 dB. How much acoustic power enters the window through sound waves?
A window whose area is 2 m2 open on a street where the street noise results at the window an intensity level of 80 dB. How much acoustic power enters the window through sound waves?
Physics-General
Physics-
A sonometer consists of two wires of lengths 1.5 m and 1m made up of different materials whose densities are 5 g/cc, 8g/cc and their respective radii are in the ratio 4:3. The ratio of tensions in those two wires if their fundamental frequencies are equal is
A sonometer consists of two wires of lengths 1.5 m and 1m made up of different materials whose densities are 5 g/cc, 8g/cc and their respective radii are in the ratio 4:3. The ratio of tensions in those two wires if their fundamental frequencies are equal is
Physics-General
Physics-
Two aeroplanes ‘A’ and ‘B’ are moving away from one another with a speed of 720 kmph. The frequency of the whistle emitted by ‘A’ is 1100 Hz. The apparent frequency of the whistle as heard by the passenger of the aeroplane ‘B’ is.(velocity of sound in air is 350 ms-1)
Two aeroplanes ‘A’ and ‘B’ are moving away from one another with a speed of 720 kmph. The frequency of the whistle emitted by ‘A’ is 1100 Hz. The apparent frequency of the whistle as heard by the passenger of the aeroplane ‘B’ is.(velocity of sound in air is 350 ms-1)
Physics-General
Physics-
The equation of a wave is 
where y x, are in cm and time in seconds. The acceleration of particle located at 
The equation of a wave is where y x, are in cm and time in seconds. The acceleration of particle located at
Physics-General
Physics-
The extension in a string, obeying Hooke’s law is x. The speed of sound in the stretched string is V. If the extension in the string is increased to 2x then speed of sound will be
The extension in a string, obeying Hooke’s law is x. The speed of sound in the stretched string is V. If the extension in the string is increased to 2x then speed of sound will be
Physics-General
Physics-
The linear density of a vibrating string is 
The transverse wave propagating along the string is described by 
where x is in meter and t is in second. The tension in the string is
The linear density of a vibrating string is The transverse wave propagating along the string is described by where x is in meter and t is in second. The tension in the string is
Physics-General
Physics-
The equation of a wave pulse is given as 
the amplitude and velocity of the pulse are
The equation of a wave pulse is given as the amplitude and velocity of the pulse are
Physics-General
Physics-
Five beats per second are produced on 21:20, then their frequencies will be
Five beats per second are produced on 21:20, then their frequencies will be
Physics-General
Physics-
If the speed of sound is changed by 1 percent, the temperature of air near 0°C be changed is
If the speed of sound is changed by 1 percent, the temperature of air near 0°C be changed is
Physics-General
Physics-
A wave pulse on a string has the dimension shown in figure. The wave speed is null. If point O is a free end. The shape of wave at time null is
A wave pulse on a string has the dimension shown in figure. The wave speed is null. If point O is a free end. The shape of wave at time null is
Physics-General
Physics-
The equation of progressive wave is 
where x,y are in meter and t in second, then
a) Velocity of wave is 50 m/s
b) Maximum velocity of particle is 1m/s
c) Wave length of wave is 2Π meter
The equation of progressive wave is where x,y are in meter and t in second, then
a) Velocity of wave is 50 m/s
b) Maximum velocity of particle is 1m/s
c) Wave length of wave is 2Π meter
Physics-General
Physics-
Sound signal is sent through a composite tube as shown in figure. The radius of the semicircle is r. Speed of sound in air is V. The source of sound is capable to generate frequencies in the range null. If n is an integer then frequency for maximum intensity is given by
Sound signal is sent through a composite tube as shown in figure. The radius of the semicircle is r. Speed of sound in air is V. The source of sound is capable to generate frequencies in the range null. If n is an integer then frequency for maximum intensity is given by
Physics-General
