Physics - Waves

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Question - 1

Ultraviolet light of sun's radiation is prevented from reaching the earth's atmosphere by the layer of 

  • A Oxygen
  • B Hydrogen
  • C Ozone
  • D Helium

Question - 2

Doppler effect is independent of

  • A Velocity of source
  • B velocity of listener
  • C the distance between source and observer
  • D None of the above

Question - 3

Match List I (Frequency Range) with List II (Uses) and select the correct answer

List I List II
A.54 MHz to
890 MHz
1.Television waves
B.1710 MHz to
54 MHz
2.Short wave
C.88 MHz to
108 MHz
3.FM radio
D.300 MHz to
3000 MHz
4.UHF band
  • A A B C D 1 2 3 4
  • B A B C D 4 3 2 1
  • C A B C D 3 4 2 1
  • D A B C D 2 1 3 4

Question - 4

With the propagation of a longitudinal wave through a material medium, the quantities transferred in the direction of propagation are

  • A energy and momentum
  • B energy, momentum, and mass
  • C energy and mass
  • D energy

Question - 5

Soundwave cannot pass through above

  • A a solid-liquid mixture
  • B an ideal gas 
  • C a liquid mixture
  • D a perfect vacuum

Question - 6

When the same note is played on a sitar and a flute, the sound produced can be distinguished from each other because of the difference in

  • A pitch and loudness
  • B quality only
  • C pitch, loudness, and quality
  • D loudness only

Question - 7

Which one of the following statements is not correct?

  • A The velocity of sound in air is independent of pressure
  • B The velocity of sound in air increases with increase of temperature
  • C The velocity of sound in air decrease as the humidity increases
  • D The velocity of sound in air is not affected by the change in amplitude and frequency

Question - 8

Ultrasonic waves are produced by

  • A Peltier's effect
  • B Piezoelectric effect
  • C Doppler's effect
  • D Coulomb's law

Question - 9

With the increase in temperature, the frequency of the sound from an organ pipe

  • A increases 
  • B decreases 
  • C remain unchanged
  • D changes erratically

Question - 10

The ratio of the speed of X-yays to that of gamma rays is

  • A <1
  • B >1
  • C 1
  • D depends upon the ratio of their frequencies