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Two vehicles, each moving with speed u on the same horizontal straight road, are approaching each other.
Wind blows along the road with velocity w. One of these vehicles blows a whistle of frequency f1 . An
observer in the other vehicle hears the frequency of the whistle to be f2 . The speed of sound in still air is
V. The correct statement(s) is (are)
Wind blows along the road with velocity w. One of these vehicles blows a whistle of frequency f1 . An
observer in the other vehicle hears the frequency of the whistle to be f2 . The speed of sound in still air is
V. The correct statement(s) is (are)
- a)If the wind blows from the observer to the source, f2 > f1
- b)If the wind blows from the source to the observer, f2 > f1
- c)If the wind blows from observer to the source, f2 < f1 .
- d)If the wind blows from the source to the observer f2 < f1
Correct answer is option 'A,B'. Can you explain this answer?
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Two vehicles, each moving with speed u on the same horizontal straight...
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Two vehicles, each moving with speed u on the same horizontal straight...
B) If the wind blows from the source to the observer, f2 > f1
Explanation:
a) If the wind blows from the observer to the source, it means that the sound waves from the whistle will be traveling in the same direction as the wind. This will cause the speed of sound relative to the observer to increase, and therefore the observed frequency f2 will be higher than the emitted frequency f1. This can be mathematically expressed as:
f2 = (V + w)/V * f1
b) If the wind blows from the source to the observer, it means that the sound waves from the whistle will be traveling in the opposite direction to the wind. This will cause the speed of sound relative to the observer to decrease, and therefore the observed frequency f2 will be lower than the emitted frequency f1. This can be mathematically expressed as:
f2 = (V - w)/V * f1
Therefore, statement b) is correct. Statement a) is not necessarily true, as the direction of the wind can affect whether f2 is higher or lower than f1.
Explanation:
a) If the wind blows from the observer to the source, it means that the sound waves from the whistle will be traveling in the same direction as the wind. This will cause the speed of sound relative to the observer to increase, and therefore the observed frequency f2 will be higher than the emitted frequency f1. This can be mathematically expressed as:
f2 = (V + w)/V * f1
b) If the wind blows from the source to the observer, it means that the sound waves from the whistle will be traveling in the opposite direction to the wind. This will cause the speed of sound relative to the observer to decrease, and therefore the observed frequency f2 will be lower than the emitted frequency f1. This can be mathematically expressed as:
f2 = (V - w)/V * f1
Therefore, statement b) is correct. Statement a) is not necessarily true, as the direction of the wind can affect whether f2 is higher or lower than f1.
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Two vehicles, each moving with speed u on the same horizontal straight road, are approaching each other.Wind blows along the road with velocity w. One of these vehicles blows a whistle of frequency f1 . Anobserver in the other vehicle hears the frequency of the whistle to be f2 . The speed of sound in still air isV. The correct statement(s) is (are)a)If the wind blows from the observer to the source, f2 > f1b)If the wind blows from the source to the observer, f2 >f1c)If the wind blows from observer to the source, f2<f1 .d)If the wind blows from the source to the observer f2 <f1Correct answer is option 'A,B'. Can you explain this answer?
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Two vehicles, each moving with speed u on the same horizontal straight road, are approaching each other.Wind blows along the road with velocity w. One of these vehicles blows a whistle of frequency f1 . Anobserver in the other vehicle hears the frequency of the whistle to be f2 . The speed of sound in still air isV. The correct statement(s) is (are)a)If the wind blows from the observer to the source, f2 > f1b)If the wind blows from the source to the observer, f2 >f1c)If the wind blows from observer to the source, f2<f1 .d)If the wind blows from the source to the observer f2 <f1Correct answer is option 'A,B'. Can you explain this answer? for JEE 2024 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about Two vehicles, each moving with speed u on the same horizontal straight road, are approaching each other.Wind blows along the road with velocity w. One of these vehicles blows a whistle of frequency f1 . Anobserver in the other vehicle hears the frequency of the whistle to be f2 . The speed of sound in still air isV. The correct statement(s) is (are)a)If the wind blows from the observer to the source, f2 > f1b)If the wind blows from the source to the observer, f2 >f1c)If the wind blows from observer to the source, f2<f1 .d)If the wind blows from the source to the observer f2 <f1Correct answer is option 'A,B'. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Two vehicles, each moving with speed u on the same horizontal straight road, are approaching each other.Wind blows along the road with velocity w. One of these vehicles blows a whistle of frequency f1 . Anobserver in the other vehicle hears the frequency of the whistle to be f2 . The speed of sound in still air isV. The correct statement(s) is (are)a)If the wind blows from the observer to the source, f2 > f1b)If the wind blows from the source to the observer, f2 >f1c)If the wind blows from observer to the source, f2<f1 .d)If the wind blows from the source to the observer f2 <f1Correct answer is option 'A,B'. Can you explain this answer?.
Two vehicles, each moving with speed u on the same horizontal straight road, are approaching each other.Wind blows along the road with velocity w. One of these vehicles blows a whistle of frequency f1 . Anobserver in the other vehicle hears the frequency of the whistle to be f2 . The speed of sound in still air isV. The correct statement(s) is (are)a)If the wind blows from the observer to the source, f2 > f1b)If the wind blows from the source to the observer, f2 >f1c)If the wind blows from observer to the source, f2<f1 .d)If the wind blows from the source to the observer f2 <f1Correct answer is option 'A,B'. Can you explain this answer? for JEE 2024 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about Two vehicles, each moving with speed u on the same horizontal straight road, are approaching each other.Wind blows along the road with velocity w. One of these vehicles blows a whistle of frequency f1 . Anobserver in the other vehicle hears the frequency of the whistle to be f2 . The speed of sound in still air isV. The correct statement(s) is (are)a)If the wind blows from the observer to the source, f2 > f1b)If the wind blows from the source to the observer, f2 >f1c)If the wind blows from observer to the source, f2<f1 .d)If the wind blows from the source to the observer f2 <f1Correct answer is option 'A,B'. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Two vehicles, each moving with speed u on the same horizontal straight road, are approaching each other.Wind blows along the road with velocity w. One of these vehicles blows a whistle of frequency f1 . Anobserver in the other vehicle hears the frequency of the whistle to be f2 . The speed of sound in still air isV. The correct statement(s) is (are)a)If the wind blows from the observer to the source, f2 > f1b)If the wind blows from the source to the observer, f2 >f1c)If the wind blows from observer to the source, f2<f1 .d)If the wind blows from the source to the observer f2 <f1Correct answer is option 'A,B'. Can you explain this answer?.
Solutions for Two vehicles, each moving with speed u on the same horizontal straight road, are approaching each other.Wind blows along the road with velocity w. One of these vehicles blows a whistle of frequency f1 . Anobserver in the other vehicle hears the frequency of the whistle to be f2 . The speed of sound in still air isV. The correct statement(s) is (are)a)If the wind blows from the observer to the source, f2 > f1b)If the wind blows from the source to the observer, f2 >f1c)If the wind blows from observer to the source, f2<f1 .d)If the wind blows from the source to the observer f2 <f1Correct answer is option 'A,B'. Can you explain this answer? in English & in Hindi are available as part of our courses for JEE.
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Here you can find the meaning of Two vehicles, each moving with speed u on the same horizontal straight road, are approaching each other.Wind blows along the road with velocity w. One of these vehicles blows a whistle of frequency f1 . Anobserver in the other vehicle hears the frequency of the whistle to be f2 . The speed of sound in still air isV. The correct statement(s) is (are)a)If the wind blows from the observer to the source, f2 > f1b)If the wind blows from the source to the observer, f2 >f1c)If the wind blows from observer to the source, f2<f1 .d)If the wind blows from the source to the observer f2 <f1Correct answer is option 'A,B'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
Two vehicles, each moving with speed u on the same horizontal straight road, are approaching each other.Wind blows along the road with velocity w. One of these vehicles blows a whistle of frequency f1 . Anobserver in the other vehicle hears the frequency of the whistle to be f2 . The speed of sound in still air isV. The correct statement(s) is (are)a)If the wind blows from the observer to the source, f2 > f1b)If the wind blows from the source to the observer, f2 >f1c)If the wind blows from observer to the source, f2<f1 .d)If the wind blows from the source to the observer f2 <f1Correct answer is option 'A,B'. Can you explain this answer?, a detailed solution for Two vehicles, each moving with speed u on the same horizontal straight road, are approaching each other.Wind blows along the road with velocity w. One of these vehicles blows a whistle of frequency f1 . Anobserver in the other vehicle hears the frequency of the whistle to be f2 . The speed of sound in still air isV. The correct statement(s) is (are)a)If the wind blows from the observer to the source, f2 > f1b)If the wind blows from the source to the observer, f2 >f1c)If the wind blows from observer to the source, f2<f1 .d)If the wind blows from the source to the observer f2 <f1Correct answer is option 'A,B'. Can you explain this answer? has been provided alongside types of Two vehicles, each moving with speed u on the same horizontal straight road, are approaching each other.Wind blows along the road with velocity w. One of these vehicles blows a whistle of frequency f1 . Anobserver in the other vehicle hears the frequency of the whistle to be f2 . The speed of sound in still air isV. The correct statement(s) is (are)a)If the wind blows from the observer to the source, f2 > f1b)If the wind blows from the source to the observer, f2 >f1c)If the wind blows from observer to the source, f2<f1 .d)If the wind blows from the source to the observer f2 <f1Correct answer is option 'A,B'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice Two vehicles, each moving with speed u on the same horizontal straight road, are approaching each other.Wind blows along the road with velocity w. One of these vehicles blows a whistle of frequency f1 . Anobserver in the other vehicle hears the frequency of the whistle to be f2 . The speed of sound in still air isV. The correct statement(s) is (are)a)If the wind blows from the observer to the source, f2 > f1b)If the wind blows from the source to the observer, f2 >f1c)If the wind blows from observer to the source, f2<f1 .d)If the wind blows from the source to the observer f2 <f1Correct answer is option 'A,B'. Can you explain this answer? tests, examples and also practice JEE tests.
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