Reflection of Sound and EchoPractice Questions & MCQs
Practice Reflection of Sound and Echo questions from Sound Waves: Characteristics and Applications (Class 9 Science) - important MCQs with answers and step-by-step solutions. Solve the sample questions below, then practice the full set free on the RankByte app.
Reflection of Sound and EchoQuiz - Solve & Score
Q1. Why are the ceilings of large concert halls often curved?
- A.to reflect and spread sound evenly to all listeners
- B.to absorb all the sound
- C.to speed up the sound
- D.to change the pitch
Answer: A. to reflect and spread sound evenly to all listeners
Q2. Why must sound-ranging methods like SONAR use a medium such as water, while radar can work in space?
- A.sound needs a material medium but radar uses electromagnetic waves
- B.sound travels faster than radar waves
- C.water blocks radar so sound is used everywhere
- D.space has too much sound already
Answer: A. sound needs a material medium but radar uses electromagnetic waves
Q3. A wall is 330 m from a source of sound (v = 340 m/s). The time after which the echo is heard is:
- A.1.94 s
- B.0.97 s
- C.1.03 s
- D.2.44 s
Answer: A. 1.94 s
Given 330 m, 340 m, asked for the unknown. By t = 2d/v = 2x330/340 = 1.94 s. t = 2d/v = 2x330/340 = 1.94 s. Hence option A) 1.94 s. Others fail: option B) '0.97 s' fails since Sound goes and returns: 2d/v; option C) '1.03 s' fails since Time = 2d/v.
Master Reflection of Sound and Echo on RankByte
Step-by-step solutions, mock tests, live ranks and streaks - free to start.
Get early accessReflection of Sound and Echo - Frequently asked questions
Where can I practise Reflection of Sound and Echo questions for Class 9 Science?
RankByte has Reflection of Sound and Echo practice questions and MCQs from Sound Waves: Characteristics and Applications (Class 9 Science), each with the correct answer and a step-by-step solution - free to start.
Are these Reflection of Sound and Echo questions important for the exam?
Yes. These Reflection of Sound and Echo important questions follow the Science exam pattern (CBSE Boards, plus JEE and NEET foundation), so they help with both school and competitive prep.
Do the Reflection of Sound and Echo questions come with answers and solutions?
Every Reflection of Sound and Echo question on RankByte comes with the correct answer and a full step-by-step solution, so you learn the concept instead of just guessing.