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# Progressive Waves Free Doubts and Solutions

## The diameter of an iron wire is 1.20mm. If the speed of the transverse wave in the wire be 50.0m/s , what is the tension in the wire ? The density of iron os 7.7 × 10 raise to 3 k/ m cube

Asked by drbharatkaila 13th February 2019, 7:38 PM

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## 2nd sum

Asked by lovemaan5500 7th January 2019, 7:41 AM

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## 9th sum

Asked by lovemaan5500 7th January 2019, 7:40 AM

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## 19th sum plz

Asked by lovemaan5500 7th January 2019, 7:39 AM

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### CBSE - XI Science - Physics - Waves

Asked by lovemaan5500 7th January 2019, 7:38 AM

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## Q)

Asked by araima2001 25th April 2017, 5:07 AM

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## qus-(a) A incident wave is represented by: y=20 sin(2x-4t) write the expression for reflected wave;-1. from a rigid boundary2.from an open boundary(b) A particle is moving with S.H.M in a atraight line.when the distance of the particle from the equilibrium position  has values y1 & y2, the corresponding values of velocities are u1, u2. show that the time period of oscillation is given by;-t= 2 pi root over{[(y2)power2-(y1)power2]%[(u2)power2-(u1)power2]}

Asked by Ravikant 26th February 2016, 10:05 PM

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## what is correct wave equation y=A sin(wt-kx) or y=Asin(kx-wt) ??? which & how  above equation of waves will used especially in +ve x-direction& -ve x-direction ???

Asked by Ravikant 16th February 2016, 6:59 PM

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## what is the amplitude of a longitudinal wave....and how do we represent longitudinal wave graphically ...? and i also want  to know that how electromagnetic waves propogates in vaccum..how do they travel when there is no medium for oscillation...????   pls answer all my questions

Asked by Rzainabafra - 31st January 2016, 1:38 PM

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## A sound wave travelling along a string is described by y(x, t) = 5 x 10-3 sin (80x - 3t) in which numerical constants are in S.I unit.  Calculate (i)  the amplitude (ii) the wave length (iii) the period and frequency of the wave.

Asked by Topperlearning User 22nd May 2015, 2:59 PM

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## For the travelling harmonic wave where x and y are in cm and t in s.  Calculate the phase difference between oscillatory motion of two points separated by a distance of (a) 4m (b) 0.5m, (c)

Asked by Topperlearning User 22nd May 2015, 2:54 PM

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## A narrow sound pulse (for example, a short pip by a whistle) is sent across a medium.  (i)  Does the pulse have a definite (a) wavelength, (b)  frequency, (c)  speed of propagation?  (ii)   If the pulse rate is 1 after every 20s (i.e the whistle is blown for a split second after every 20s), is the frequency of the note produced by the whistle equal to 1/20 = 0.05 Hz?

Asked by Topperlearning User 22nd May 2015, 2:53 PM

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## What is propagation constant (k)?

Asked by Topperlearning User 22nd May 2015, 2:37 PM

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## Plane microwaves from a transmitter are directed normally towards a plane reflector.A detector moves along the normal to the reflector.Between positions of 14 successive maxima , the detector travels a distance 0.14m. Find the frequency of the transmitter.

Asked by Malavika Umesh 21st May 2015, 9:52 AM

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## If light is an electromagnetic wave then why does it remain unchanged in an electric/magnetic field?

Asked by joykphukan 10th May 2015, 9:28 PM

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## <div>a copper wire is held at the two ends by rigid supports.At&nbsp;<img class="Wirisformula" src="https://images.topperlearning.com/topper/tinymce/integration/showimage.php?formula=8f2698fe1148fba51060b64af588c94f.png" alt="50 to the power of 0" align="middle" />c the wire is just taut&lt;with negligible tension. if Y=1.2X<img class="Wirisformula" src="https://images.topperlearning.com/topper/tinymce/integration/showimage.php?formula=733ff3d4e5b0b649b92a35e61ff2e708.png" alt="10 to the power of 11" align="middle" />N/<img class="Wirisformula" src="https://images.topperlearning.com/topper/tinymce/integration/showimage.php?formula=a50d11393efc067b8506820cf1ccbabf.png" alt="m squared" align="middle" />,<img class="Wirisformula" src="https://images.topperlearning.com/topper/tinymce/integration/showimage.php?formula=dedbf6a559a928eeeaee82c4b1bf40d3.png" alt="alpha" align="middle" />=1.6x<img class="Wirisformula" src="https://images.topperlearning.com/topper/tinymce/integration/showimage.php?formula=bfc08f5d0261794293e07d2fdcbb36c8.png" alt="10 to the power of negative 5 end exponent" align="middle" />&nbsp;and&nbsp;<img class="Wirisformula" src="https://images.topperlearning.com/topper/tinymce/integration/showimage.php?formula=410a657d990d43c84c1191c380605062.png" alt="rho" align="middle" />=9.2x<img class="Wirisformula" src="https://images.topperlearning.com/topper/tinymce/integration/showimage.php?formula=615606f7dfabbc0f75652dd1e8c4698c.png" alt="10 cubed" align="middle" />,then the speed of transverse waves in this wire in this wire at&nbsp;<img class="Wirisformula" src="https://images.topperlearning.com/topper/tinymce/integration/showimage.php?formula=6881e161a138f95ca429868b53f50058.png" alt="30 to the power of 0" align="middle" />c is</div> <div>(a)64.6</div> <div>(b)16.2</div> <div>(c)23.2</div> <div>(d032.2</div>

Asked by Akanksha Mishra 22nd March 2015, 5:33 PM

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## two strings A and string B playing the note 'Ga' are slightly out of tune and produce beats of frequency 6Hz. The tension in the string A is slightly reduced and the beat frequency is found to reduce to 3Hz. if the original frequency of A is 324 Hz what is the frequency of B?

Asked by sammy123 21st March 2015, 4:26 PM

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## <div>A rope of length L and mass m hangs freely from the ceiling.The velocity of transverse &nbsp;as a function of position x along the rope is proportional to</div> <div>&nbsp;</div> <div>(a)<img class="Wirisformula" src="https://images.topperlearning.com/topper/tinymce/integration/showimage.php?formula=93394efb213bbe1789ba5da2b6d2c431.png" alt="x to the power of 0" align="middle" /></div> <div>(b)<img class="Wirisformula" src="https://images.topperlearning.com/topper/tinymce/integration/showimage.php?formula=4cc3bedeef40642610872595959094f9.png" alt="square root of x" align="middle" /></div> <div>(c)<img class="Wirisformula" src="https://images.topperlearning.com/topper/tinymce/integration/showimage.php?formula=a52edb8b09b6f737eab5fa5bbaaff0a7.png" alt="bevelled fraction numerator 1 over denominator square root of x end fraction" align="middle" /></div> <div>(d)X</div>

Asked by Akanksha Mishra 20th March 2015, 3:35 PM

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## Why water waves is said  to be a combination of both transverse and longitudinal waves

Asked by rpmtu 23rd December 2014, 7:37 PM

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## Derive an expression for a simple harmonic plane progressive wave.

Asked by Topperlearning User 4th June 2014, 1:23 PM

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## Given below are some examples of wave-motion.  State in each case if the wave-motion is transverse, longitudinal or a combination of both : (i)  Motion of a kink in a long coil spring produced by displacing the end of the spring sideways. (ii)  Waves produced in a cylinder containing a liquid by moving its piston back and forth. (iii)  Waves produced by a motor boat sailing in water. (iv)  Light waves travelling from the sun to the earth. (v)  Ultrasonic waves in air produced by a vibrating quartz crystal.

Asked by Topperlearning User 4th June 2014, 1:23 PM

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## Define transverse wave motion.  What are the essential conditions required for the formation of transverse wave motion?

Asked by Topperlearning User 4th June 2014, 1:23 PM

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## Define longitudinal wave motion.  What are the essential conditions required for the formation of longitudinal wave motion?

Asked by Topperlearning User 4th June 2014, 1:23 PM