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A narrow sound pulse (for example, a sho...

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

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The correct Answer is:
The pulse does not have a definite wavelength or frequency but has a definite speed of propagation (in a non-dispersive medium) (b) No.
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A narrow sound pulse (for example, a short pip by a whistle) is sent across a medium. (a) Does the pulse have a definite (i) wavelength, (ii) frequency, (iii) speed of propagation ? (b) If the pulse rate is 1 after every 20 s , (i.e. the whistle is blown for a split second after every 20 s ) is the frequency of the note produced by the whistle equal to (1)/(20) = 0.05 Hz ?

A narrow sound pulse (for example, a short pip by a whistle) is send across a medium. (a) Does the pulse have a definite (i) wavelength (ii) frequency (iii) speed of propagation? (b) If the pulse rate is 1 after every 20s. (i.e, by a whistle equal to 1/20 Hz?

A narrow pulse (for example, a short pip by a whistle) is sent across a medium. If the pulse rate is 1 after every 20 s (that is the whistle is blow for a split of second after every 20 s). Is the frequency of the note produced by the whistle equal to 1//20 or 0.05 Hz ?

The engine of a train sound a whistle at frequency v, the frequency heard by a passenger is

The engine of a train sound a whistle at frequency v , the frequency heard by a passenger is

A railroad train is travelling at 30.0 m/s in still air. The frequency of the note emitted by the train whistle is 262 Hz. Speed of sound in air is 340 m/s.

A train is moving with speed 72 km/h towards a hill blows a whistle of frequency 1240Hz. the frequency of echo heard by driver is(speed of sound=330m/s)

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A: When a narrow pulse of light is sent through a medium, it doesn't retain its shape as it travels through the medium. R: Since the speed of propagation in a medium depends on wavelength , different wavelength components of the pulse travel with different speeds.

RESONANCE ENGLISH-SOUND WAVES-Board Level Exercise
  1. If any explosion takes place at the bottom of a lake, what type of sho...

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  2. A narrow sound pulse (for example, a short pip by a whistle) is sent a...

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  3. Discuss how sound is originated ?

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  4. What are the various types of wave? Give examples.

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  5. Distinguish between Transverse and Longitudinal waves

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  6. What are the characteristics of wave motion ?

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  7. A hospital uses an ultrasonic scanner to locate tumours in a tissue. W...

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  8. A transverse hormonic wave on a string on a string is descibed by y(...

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  9. For the wave y= 3.0 sin(36t + 0.018x + pi/4) plot the displacement (y)...

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  10. For the harmonic travelling wave y=2cos2pi(10t-0.0080x+3.5) where x an...

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  11. A hospital uses an ultrasonic scanner to locate tumours in a tissue. W...

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  12. (a) What is sound ? (b) In what ways does and resemble with or diffe...

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  13. By how much the wave velocity increases for 1^(@)C rise of temperature...

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  14. Give expressions of velocity of sound in solids and liquids.

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  15. you have learnt that a travelling wave in one dimension is represented...

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  16. (a) State and explain Newton's formula for the velocity of sound in th...

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  17. Use the formula v=sqrt((gammaP)/(rho)) to explain why the speed of sou...

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  18. Why the church bell has large surface area ?

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  19. Which characteristics of the sound helps you to identify your friend b...

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  20. How can we tell in a completely dark room that a particular soun is pr...

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