Class 10 Online Courses

Class 10 physics Practice Tests

Class 10 Physics Online Tests

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The e-Book Echo of sound Multiple Choice Questions (MCQ Quiz) with answers, echo of sound MCQs PDF download to learn online 10th grade physics certificate courses. Solve Sound Multiple Choice Questions and Answers (MCQs), Echo of Sound quiz answers PDF for online school and college. The Echo of Sound MCQ App Download: Free learning app for ultrasound, sound and sound waves, reflection (echo), characteristics of sound test prep for online school and college.

The MCQ To communicate with each other, Elephants use: low frequency sound waves, low frequency light waves, high frequency sound waves and low frequency heat waves with "Echo of Sound" App Download (Free) for online school and college. Study sound quiz questions, download Amazon eBook (Free Sample) for online school courses.

## Echo of Sound MCQ Quiz : Physics MCQs

MCQ 1: To communicate with each other, Elephants use

A) low frequency sound waves
B) low frequency light waves
C) high frequency sound waves
D) low frequency heat waves

MCQ 2: When sound is incident on the surface of a medium it bounces back into the first medium. The phenomenon is called

A) refraction of sound
B) deflection of sound
C) defraction of sound
D) reflection of sound

MCQ 3: The total distance covered by the sound from the point of generation to the reflecting surface and back should be at least

A) 30 m
B) 34 m
C) 40 m
D) 38 m

MCQ 4: For hearing distinct echoes, the minimum distance of the obstacle from the source of sound must be

A) double to this distance
B) equal to this distance
C) half of this distance
D) one third to this distance

MCQ 5: Echoes may be heard more than once due to successive or multiple reflections

A) deflections
B) defraction
C) refractions
D) reflections

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