Echo of Sound MCQs Quiz Online PDF Download eBook
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"To communicate with each other, Elephants use" Multiple Choice Questions (MCQ) on torque and moment of force with choices low frequency sound waves, low frequency light waves, high frequency sound waves, and low frequency heat waves for online school and college. Practice sound quiz questions for online certificate programs for online school courses.
MCQs on Echo of Sound PDF Download eBook
MCQ: To communicate with each other, Elephants use
- low frequency sound waves
- low frequency light waves
- high frequency sound waves
- low frequency heat waves
A
MCQ: When sound is incident on the surface of a medium it bounces back into the first medium. The phenomenon is called
- refraction of sound
- deflection of sound
- defraction of sound
- reflection of sound
D
MCQ: The total distance covered by the sound from the point of generation to the reflecting surface and back should be at least
- 30 m
- 34 m
- 40 m
- 38 m
B
MCQ: For hearing distinct echoes, the minimum distance of the obstacle from the source of sound must be
- double to this distance
- equal to this distance
- half of this distance
- one third to this distance
C
MCQ: Echoes may be heard more than once due to successive or multiple reflections
- deflections
- defraction
- refractions
- reflections
D