Multiple Choice Questions
Multiple Choice Questions
Q.1. Which of the following are transferred from one place to another place by the waves?
(a) mass
(b) wavelength
(c) velocity
(d) energy
Q.2. Sound waves are:
(a) transverse
(b) longitudinal
(c) partly transverse and partly longitudinal
(d) none of these
Q.3. On a slinky we can produce :
(a) transverse waves only
(b) longitudinal waves only
(c) both transverse and longitudinal waves
(d) neither transverse nor longitudinal waves
Q.4. The distance between consecutive crests is :
(a) one wavelength
(b) half a wavelength
(c) one-fourth wavelength
(d) twice wavelength
Q.5. Hertz is a unit of:
(a) time period
(b) wavelength
(c) frequency
(d) wave speed
Q.6. If the density of a medium through which sound is propagation is minimum, then this point is called :
(a) rarefaction
(b) crest
(c) compression
(d) trough
Q.7. The audible range for a normal human being is :
(a) 10 Hz to 20,000 Hz
(b) 20 Hz to 20 kHz
(c) 10 Hz to 50 kHz
(d) 20 Hz to 1000 Hz
Q.8. Ultrasonic are not used in :
(a) SONAR
(b) sonography
(c) CUSA
(d) radio waves
Q.9. A bomb explodes on the Moon. How long will the sound of explosion take to reach the Earth?
(a) 10 s
(b) 1000 s
(c) 1 day
(d) none of these
Q.10. The walls of a hall built for musical concert should :
(a) amplify sound
(b) reflect sound
(c) transmit sound
(d) absorb sound
Q.11. In an orchestra, the musical sounds of different instruments are distinguished from one another by the characteristic of :
(a) loudness
(b) pitch
(c) quality or timbre
(d) all the three
Q.12. The bells of a temple are made of large size. It is for :
(a) producing sound of high pitch
(b) producing loud sound
(c) producing sound of high quality
(d) enhancing the beauty
Q.13. An astronaut cannot hear his companion on the surface of the Moon because :
(a) frequencies produced are above the audio frequencies
(b) there is no medium for sound propagation
(c) temperature is too low during night and high during day
(d) there are too many craters on the surface of the Moon
Q.14. The loudness of a sound depends upon :
(a) amplitude
(b) pitch
(c) velocity
(d) wavelength
Q.15. In the bell jar experiment, as air is removed from the jar :
(a) intensity of sound falls
(b) speed of sound falls
(c) intensity of sound increases
(d) speed of sound increases
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