


ICSE /Class 10
Physics MCQ Based On Reflection of sound waves echoes
Our free online Physics test quiz for Class 10, ICSE will assist you to improve your Physics skills on every concept in a fun interactive way.



Happy students

Awesome classes
ICSE Class 10 Physics Reflection of sound waves echoes
|
V=(total distance )/(time taken)=(2×75)/0.5=300m/s
speed=2d/t⇒d=(speed×t)/2=(350×1)/2=175m.
Mechanical waves are those waves which needs medium to propagate.
The minimum distance between the source and the reflector in air, to hear an echo, is 17 m.
330/20=16.5m, 330/20000=16.5 ×〖10〗^(-3) m=16.5mm
Since distance is same so V_air t_air=t_water⇒t_water=(V_air t_air)/V_water =1/2×4=2s
To detect obstacles in their path, bats produce Ultrasonic waves.
RADAR stands for “Radio detection and ranging”.
Longitudinal wave are waves in which direction of wave is parallel to the direction of vibration of particle of the medium.

At JustTutors, we believe in the power of digital technology to help students get personalized learning and attention from India's best-in-class science, english and math tutors. We are focused on creating a top-class e-learning platform that brings together the best teachers, technology, media, content for creating a seamless and world-class experience for every student.
