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Primula Mukherjee asked a question
Subject: Physics, asked on on 22/2/14

Derivation for doppler's effect?
Upasana Rajkonwar asked a question
Subject: Physics, asked on on 31/7/13

at what temperature will the speed of sound be double its value at 273K
Soura Rajeshwara asked a question
Subject: Physics, asked on on 5/12/16
The speed of sound in Hydrogen at NTP, is 1270 m/s. Then the speed in a mixture of Hydrogen and Oxygen in the ratio 4:1 by volume, (in m/s) will be
Poonam Doval asked a question
Subject: Physics, asked on on 2/3/14

please give the readings of sonometer experiment to find relation betweeen frequncy and length of the wire
Rajnin Nanda asked a question
Subject: Physics, asked on on 11/4/16
Two sources A and B are sounding notes of frequency 660Hz. A listener moves from A to B with a constant velocity u. If the speed of sound is 330m/s, what must be the value of u so that hears 8 beats per second? Ans is 2m/s
Rajnin Nanda asked a question
Subject: Physics, asked on on 9/4/16
A policeman on duty detects a drop of 10% in the potch of the horn of motion of car as ot crosses him. If the velocity of sound is 330m/s. Calculate speed of the car. AnAns is 17.4 m/s
Soura Rajeshwara asked a question
Subject: Physics, asked on on 5/12/16
The wave function of a pulse is given by y = 5 / (4x + 6t)2, where x and y are in metre and t is in second. The velocity of pulse is
 
Meethi asked a question
Subject: Physics, asked on on 29/12/15
A wave represented by the equation y= a cos( kx- wt) is superimposed with another wave to form a stationary wave such that point x=0 is a node. The equation for the other wave is? Answer is -a cos( kx + wt) . Pls solve and explain the solution elaborately. Thanks
Gayatri Chandran asked a question
Subject: Physics, asked on on 24/2/13

can you give me the derivation of y=Asin(wt-kx)?
Jeneeta Eliza John asked a question
Subject: Physics, asked on on 26/3/17
The equation of the progressive wave, where t is the time in second, x is the distance in metre is y = Acos240( t - x/12). The phase difference (in SI units) between two positions 0.5m apart is.

A) 40  B)20  C)10  D)5
Abhijeet Manohar & 1 other asked a question
Subject: Physics, asked on on 3/11/12

The sound intensity level at a point 4 m from the point source is 10 dB,then the sound level at a distance 2 m from the same source will be
Sajilal Bhaskaran & 1 other asked a question
Subject: Physics, asked on on 11/1/14

what is the essential condition for the formation of beats?
Amrut Vis asked a question
Subject: Physics, asked on on 27/12/10

a sonometer wire has  a length 114 cm between two fixeed ends.where should be two bridges placed so that 3 segments have fundamental frequencies in the ratio 1:3:4?
Priya asked a question
Subject: Physics, asked on on 30/8/12

A transverse wave is described by the equation y=y0 sin2pie (ft-x/a). The maximum particle velocity is equal to 4 times the wave velocity, what is the value of 'a'.
Alia asked a question
Subject: Physics, asked on on 25/12/15
in resonance tube two successive positions of resonance are obtained at 15cm and 48cm. if the frequency of the fork is 500cps, the velocity of sound is
Aditya Chadha asked a question
Subject: Physics, asked on on 9/2/12

What are standing waves?
Nishma Dhand asked a question
Subject: Physics, asked on on 14/2/17
Question) An observer is approaching with a speed  v, towards a stationary source emitting sound waves of wavelength λ0. The wavelength shift defected by the observer is. (Take c = speed of sound )
(1) λ0vc(2) λ0cv(3) λ0v2c2(4) Zero
Avani Goel asked a question
Subject: Physics, asked on on 31/1/13

a tuning fork of unknown frequency gives 4 beats with a tuning fork of freqency 310 Hz. it gives the same no. of beats on filing. find the unknown frequency
Monu asked a question
Subject: Physics, asked on on 27/1/13

Fundamental frequency of a sonometer wire increases by SHM.If its tension is increased by 21%.How will frequency be affected if its length is increased by 10%.Please give the method. (ans=45.45Hz).
Vishwa asked a question
Subject: Physics, asked on on 26/2/13

 what is doppler effect?
Salini Mukherjee asked a question
Subject: Physics, asked on on 14/2/13

two tuning forks A and B produce 4 beats/sec.On loading B with wax, 6 beats/sec are heard.If quantity of wax is reduced, the number of beats per second again becomes 4.Find the frequency of B if the frequency of B if the frequency of A is 256 hz?
Alia asked a question
Subject: Physics, asked on on 24/12/15
the tones that are separated by three octaves have a frequency ratio of
Deepali Rathore asked a question
Subject: Physics, asked on on 6/5/16
Two vibrating tuning forks produce progressive waves given by Y1=4sin500(pi)t and Y2= 2sin506(pi)t. No. of beats produced per minute is
a) 360
b) 60
c) 180
d) 3
akshey.goel... asked a question
Subject: Physics, asked on on 29/12/10

 a list of different types of musical instruments and which part of the instrument vibrates to produce sound.
Mansi Sahu asked a question
Subject: Physics, asked on on 28/2/16
A transverse sinusoidal wave moves along a string in positive x direction at a speed of 10 cm/s. The wavelength is 0.5 m anf its amplitude is 10 cm. The velocity of particle when its displacement is 5 cm is............
Sampada asked a question
Subject: Physics, asked on on 9/2/15
~~The frequency changes by 10% as a sound source approaches a stationary observer with constant speed Vs. What would be the % change in the frequency as the source recedes the observer with same speed (Vs < V) ? 1) 10.5% 2) 8.5% 3) 4.5% 4) 1.5%
Nidhi Bhat asked a question
Subject: Physics, asked on on 10/2/15
the length of a sonometer wire is 0.75 m and density 9 * 10^3 kg/m^3 . It can bear a stress of 8.1 * 10^8 N/m^2 without exceeding the elastic limit . what will be the fundamental frequency that can be produced in the wire ?
Rajnin Nanda asked a question
Subject: Physics, asked on on 9/4/16
A locomotive approaching a crossing at a speed of 20m/s aound a whistle of frequency 640Hz when 1 km from crossing. There ia no wind and the speed oof aound of air is 330m/s. What frequency is heard by an observer 3 under root km on the straight road from crossing at right angle. Ans is 660 hz.
Tarun K asked a question
Subject: Physics, asked on on 7/1/14

show that in a closed end organ pipe only odd harmonies can be produced.
swati_lohia96... asked a question
Subject: Physics, asked on on 20/2/13

derive newton's formula for velocity of sound in air.
Akshay Kumar & 1 other asked a question
Subject: Physics, asked on on 11/2/13

which of blue and red light will be deviated more by a prism and why?
Parv Kamal asked a question
Subject: Physics, asked on on 2/2/14

Why fruits fall down from a tree, when its branches are shaken ?
Divya Chaudhary asked a question
Subject: Physics, asked on on 17/11/16
What is the wavelength of sound waves in hydrogen gas corresponding to the lower limit of audibility ? If speed of sound in hydrogen gas is 1350m/s
Nidhi Bhat asked a question
Subject: Physics, asked on on 9/2/15
Ina a simple harmonic wave what should be the minimum distance between particles in same phase always having same speed ?
Sonali Bhardwaj asked a question
Subject: Physics, asked on on 5/3/15
A train moves twrds a stationary observer wid a speed of 34 m/s.the train sounds a whistle and its frequency registered by observers is'f1'. II train speed is reduced to 17 m/s ,d frequency is found to be 'f2'.if d speed of sound is 340m/s,den find f1/f2
Anshum asked a question
Subject: Physics, asked on on 7/3/14

The fundamental frequency of the open organ pipe is 300 Hz.The frequency of the first overtone of the another closed organ pipe is the same as the frequency of the first overtone of open pipe.What are the length of the pipes ?? The speed of the sound is=330ms-1.
Gouri Nangliya asked a question
Subject: Physics, asked on on 24/5/16
23. a second harmonic has to be generated in a string of length l stretched between two rigid supports. The point where string has to be plucked and touched are
1.l/4,l/2
2.l/4,3l/4
3.l/2,l/4
4.l/2,3l/4
Correct ans is 1. Plz ans.
​
Sampada asked a question
Subject: Physics, asked on on 9/2/15
~~Nitrogen gas is filled in an insulated container. If α fraction of moles dissociates without change of any energy, then the fractional change in its temperature is 1) –α/5+α 2) α/3+α 3) –3α/2+α 4) 5α/2+3α
Parth Bhatia asked a question
Subject: Physics, asked on on 22/12/14
A ray of light form a denser medium strikes a rarer medium at angle of incidence i. The reflected and refracted rays make an angle of 90 degrees with each other. The angle of reflection and refraction are r and r' resp. the critical angle is?
Rucha Tenglikar asked a question
Subject: Physics, asked on on 1/3/16
give any 5 difference between progressive wave and stationary wave
Samriddhi Dhawan asked a question
Subject: Physics, asked on on 2/1/16
An organ pipe closed at one end has fundamental frequency of 1500 Hz. The maximum number of overtones generated by this pipe, which a normal person can hear is?
Roshan Ali asked a question
Subject: Physics, asked on on 5/9/13

what are matter waves ?
sarab1_singh... asked a question
Subject: Physics, asked on on 25/2/12

@meritnation Expert 

Q1)-The displacement of a wave is represented by

 y=0.25x10-3sin (500t-0.25x) 

where y, t and x are in cm, sec and m respectively. Deduce (a) the amplitude  (b) wavelength (c) angular frequency (d) time period (e) amplitude of particle velocity.
Akash T.g asked a question
Subject: Physics, asked on on 24/1/18
Solve this:
A travelling wave in a string is represented by y = 3 sin π2tπ4x. The phase difference between two particles  separated by a distance 4cm is (take x and y in cm and t in seconds )
(1) π2rad                   (2) π4rad(3) π rad                    (4) 0
Tejaswini asked a question
Subject: Physics, asked on on 20/1/13

what is mach number???what is its significance?
Vishwa asked a question
Subject: Physics, asked on on 9/12/12

what are progressive wave? and what are its characteristics and derive tthe equation of progressive wave.
Chandni Jain asked a question
Subject: Physics, asked on on 2/1/17
a point mass oscillates along the x-axis according to the law x=xₒcos (wt -π/4).if the acceleration of the particle is written as a = A cos(wt + δ) then A = and δ = ?
Akash Yadav asked a question
Subject: Physics, asked on on 27/12/16
A string under a tension of 129.6N produces 10 beats per second when it is vibrated along with a tunning fork then the tension in the string id reduced to 160N it sounds in unison with the same tunning fork then what is the fundamental frequency of tunning fork?
Nishita Chauhan asked a question
Subject: Physics, asked on on 15/9/17
A uniform string resonates with a tuning fork, at a maximum tension of 32N. If it is divided into two segments by placing a wedge at a distance one-fourth of length from one end, then to resonance with same frequency the maximum value of tension for string will be
1. 2N
2. 4N
3. 8N
4. 16N
Devi M Nair asked a question
Subject: Physics, asked on on 18/12/12

what are beats explain
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