Sound waves : Physics revision test paper

Vivek Singh
25 Sep 0 0

Q1.  SHORT ANSWERS QUESTIONS :                                       (05 MARKS)

  1. Wave used by astronauts for communication in space ?
  2. Why Sound waves are called mechanical waves?
  3. Aircrafts flying at speed higher then speed of sound are known as ?
  4. What should an object should do produce sound ?
  5. Nomenclature for waves containing : i) Crest & trough ii)compression and rarefractions


Q2.  An explosion carried out in a vacuum is visible to a human being but is not audible. Why? 

                                                                                                                                                             (02 MARKS)


Q3.  What is sound wave? Define their types along with the proper diagram.  (05 MARKS)


Q4.  Define the following terms :                                                                                            (10 MARKS)

  1. Wavelength
  2. Time period
  3. Amplitude
  4. Supersonics
  5. Crest & Rarefraction


Q5.    A sound wave has a frequency of 2 kHz and wave length 35 cm. How long will it take to travel 1.5 km?

                                                                                                                                                          (04 MARKS)

Q6. A ship sends out ultrasound that returns from the seabed and is detected after 3.42 s.

If the speed of ultrasound through seawater is 1531 m/s, what is the distance of the seabed

 from the ship?                                                                                                                     (04 MARKS)

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