Physics Exam > Physics Questions > When both source and observer move in the sam...
Start Learning for Free
When both source and observer move in the same direction with a velocity equal to half the velocity of sound. the change in frequency of the sound as detected by the observer is
- a)zero
- b)25%
- c)50%
- d)none of the above
Correct answer is option 'A'. Can you explain this answer?
| FREE This question is part of | Download PDF Attempt this Test |
Verified Answer
When both source and observer move in the same direction with a veloci...
In this case n’ 
Both are moving in the direction of sound.
∴
no change in frequency.
Both are moving in the direction of sound.
∴
no change in frequency.
Most Upvoted Answer
When both source and observer move in the same direction with a veloci...
The phenomenon described in the question is known as the Doppler effect. The Doppler effect refers to the change in frequency of a wave (in this case, sound) as observed by an observer when there is relative motion between the source of the wave and the observer.
When both the source and the observer are moving in the same direction, the relative velocity between them is the difference between their individual velocities. In this case, the relative velocity is equal to half the velocity of sound.
The Doppler effect can be mathematically expressed using the following equation:
Δf/f = v/c
where Δf is the change in frequency, f is the original frequency, v is the relative velocity, and c is the speed of sound.
In this case, the relative velocity is half the velocity of sound, so we can substitute v = (1/2)c into the equation:
Δf/f = (1/2)c/c = 1/2
Therefore, the change in frequency is equal to half the original frequency. This means that the frequency observed by the observer will be lower than the original frequency by 50%.
Since the question asks for the change in frequency as detected by the observer, the correct answer is option A, zero. This is because the change in frequency is zero when the source and observer move in the same direction with a velocity equal to half the velocity of sound. The frequency observed by the observer will be the same as the original frequency.
To summarize:
- The Doppler effect refers to the change in frequency of a wave as observed by an observer when there is relative motion between the source and the observer.
- When both the source and the observer move in the same direction with a velocity equal to half the velocity of sound, the change in frequency is zero.
- The frequency observed by the observer will be the same as the original frequency.
When both the source and the observer are moving in the same direction, the relative velocity between them is the difference between their individual velocities. In this case, the relative velocity is equal to half the velocity of sound.
The Doppler effect can be mathematically expressed using the following equation:
Δf/f = v/c
where Δf is the change in frequency, f is the original frequency, v is the relative velocity, and c is the speed of sound.
In this case, the relative velocity is half the velocity of sound, so we can substitute v = (1/2)c into the equation:
Δf/f = (1/2)c/c = 1/2
Therefore, the change in frequency is equal to half the original frequency. This means that the frequency observed by the observer will be lower than the original frequency by 50%.
Since the question asks for the change in frequency as detected by the observer, the correct answer is option A, zero. This is because the change in frequency is zero when the source and observer move in the same direction with a velocity equal to half the velocity of sound. The frequency observed by the observer will be the same as the original frequency.
To summarize:
- The Doppler effect refers to the change in frequency of a wave as observed by an observer when there is relative motion between the source and the observer.
- When both the source and the observer move in the same direction with a velocity equal to half the velocity of sound, the change in frequency is zero.
- The frequency observed by the observer will be the same as the original frequency.
Free Test
FREE
| Start Free Test |
Community Answer
When both source and observer move in the same direction with a veloci...
In this case n’
Both are moving in the direction of sound.
∴
no change in frequency.
Both are moving in the direction of sound.
∴
no change in frequency.
|
Explore Courses for Physics exam
|
|
Similar Physics Doubts
When both source and observer move in the same direction with a velocity equal to half the velocity of sound. the change in frequency of the sound as detected by the observer isa)zerob)25%c)50%d)none of the aboveCorrect answer is option 'A'. Can you explain this answer?
Question Description
When both source and observer move in the same direction with a velocity equal to half the velocity of sound. the change in frequency of the sound as detected by the observer isa)zerob)25%c)50%d)none of the aboveCorrect answer is option 'A'. Can you explain this answer? for Physics 2024 is part of Physics preparation. The Question and answers have been prepared according to the Physics exam syllabus. Information about When both source and observer move in the same direction with a velocity equal to half the velocity of sound. the change in frequency of the sound as detected by the observer isa)zerob)25%c)50%d)none of the aboveCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Physics 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for When both source and observer move in the same direction with a velocity equal to half the velocity of sound. the change in frequency of the sound as detected by the observer isa)zerob)25%c)50%d)none of the aboveCorrect answer is option 'A'. Can you explain this answer?.
When both source and observer move in the same direction with a velocity equal to half the velocity of sound. the change in frequency of the sound as detected by the observer isa)zerob)25%c)50%d)none of the aboveCorrect answer is option 'A'. Can you explain this answer? for Physics 2024 is part of Physics preparation. The Question and answers have been prepared according to the Physics exam syllabus. Information about When both source and observer move in the same direction with a velocity equal to half the velocity of sound. the change in frequency of the sound as detected by the observer isa)zerob)25%c)50%d)none of the aboveCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Physics 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for When both source and observer move in the same direction with a velocity equal to half the velocity of sound. the change in frequency of the sound as detected by the observer isa)zerob)25%c)50%d)none of the aboveCorrect answer is option 'A'. Can you explain this answer?.
Solutions for When both source and observer move in the same direction with a velocity equal to half the velocity of sound. the change in frequency of the sound as detected by the observer isa)zerob)25%c)50%d)none of the aboveCorrect answer is option 'A'. Can you explain this answer? in English & in Hindi are available as part of our courses for Physics.
Download more important topics, notes, lectures and mock test series for Physics Exam by signing up for free.
Here you can find the meaning of When both source and observer move in the same direction with a velocity equal to half the velocity of sound. the change in frequency of the sound as detected by the observer isa)zerob)25%c)50%d)none of the aboveCorrect answer is option 'A'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
When both source and observer move in the same direction with a velocity equal to half the velocity of sound. the change in frequency of the sound as detected by the observer isa)zerob)25%c)50%d)none of the aboveCorrect answer is option 'A'. Can you explain this answer?, a detailed solution for When both source and observer move in the same direction with a velocity equal to half the velocity of sound. the change in frequency of the sound as detected by the observer isa)zerob)25%c)50%d)none of the aboveCorrect answer is option 'A'. Can you explain this answer? has been provided alongside types of When both source and observer move in the same direction with a velocity equal to half the velocity of sound. the change in frequency of the sound as detected by the observer isa)zerob)25%c)50%d)none of the aboveCorrect answer is option 'A'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice When both source and observer move in the same direction with a velocity equal to half the velocity of sound. the change in frequency of the sound as detected by the observer isa)zerob)25%c)50%d)none of the aboveCorrect answer is option 'A'. Can you explain this answer? tests, examples and also practice Physics tests.
|
|
Explore Courses for Physics exam
|
|
Suggested Free Tests
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
Follow Us
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup