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Physics
Class 9
Lakhmir Singh
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Chapter 1: Motion
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2
Chapter 2: Force and Laws of Motion
114 questions
3
Chapter 3: Gravitation
157 questions
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Chapter 4: Work and Energy
128 questions
5
Chapter 5: Sound
162 questions
Q1
Question 1:
Which property of sound leads of the formation of echoes ?
Q2
Question 1:
While performing an experiment on verifying the laws of reflection of sound, a student is to choose between
(i) a narrow or a wide tube, and
(ii) a strong or a faint source of the sound.
The observed experimental difference, between the values of angle of incidence and angle of reflection, is likely to be minimum when he chooses a :
(1) narrow tube and a faint source
(2) wide tube and a faint source
(3) narrow tube and a strong source
(4) wide tube and a strong source
(i) a narrow or a wide tube, and
(ii) a strong or a faint source of the sound.
The observed experimental difference, between the values of angle of incidence and angle of reflection, is likely to be minimum when he chooses a :
(1) narrow tube and a faint source
(2) wide tube and a faint source
(3) narrow tube and a strong source
(4) wide tube and a strong source
Q3
Question 2:
What name is given to the repetition of sound caused by the reflection of sound waves ?
View all questionQuestion
Question 1:
While performing an experiment on verifying the laws of reflection of sound, a student is to choose between
(i) a narrow or a wide tube, and
(ii) a strong or a faint source of the sound.
The observed experimental difference, between the values of angle of incidence and angle of reflection, is likely to be minimum when he chooses a :
(1) narrow tube and a faint source
(2) wide tube and a faint source
(3) narrow tube and a strong source
(4) wide tube and a strong source
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Text solution
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Answer:
The observed experimental difference, between the values of angle of incidence and angle of reflection, is likely to be minimum when he chooses a narrow tube and a strong source. Because narrow tube allows the selected sound waves to travel clearly so that more distinct sound can be heard. Also, a strong source is always preferred over a faint source because the sound should be clear and audible to verify the laws of reflection of sound.
Hence, the correct answer is option 3.
Hence, the correct answer is option 3.
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Practice more questions from Physics (Lakhmir Singh)
Q1
Question 1:
Which property of sound leads of the formation of echoes ?
Q2
Question 1:
While performing an experiment on verifying the laws of reflection of sound, a student is to choose between
(i) a narrow or a wide tube, and
(ii) a strong or a faint source of the sound.
The observed experimental difference, between the values of angle of incidence and angle of reflection, is likely to be minimum when he chooses a :
(1) narrow tube and a faint source
(2) wide tube and a faint source
(3) narrow tube and a strong source
(4) wide tube and a strong source
(i) a narrow or a wide tube, and
(ii) a strong or a faint source of the sound.
The observed experimental difference, between the values of angle of incidence and angle of reflection, is likely to be minimum when he chooses a :
(1) narrow tube and a faint source
(2) wide tube and a faint source
(3) narrow tube and a strong source
(4) wide tube and a strong source
Q3
Question 2:
What name is given to the repetition of sound caused by the reflection of sound waves ?
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| Question Text | Question 1:
While performing an experiment on verifying the laws of reflection of sound, a student is to choose between (i) a narrow or a wide tube, and (ii) a strong or a faint source of the sound. The observed experimental difference, between the values of angle of incidence and angle of reflection, is likely to be minimum when he chooses a : (1) narrow tube and a faint source (2) wide tube and a faint source (3) narrow tube and a strong source (4) wide tube and a strong source |
| Topic | Sound |
| Subject | Science |
| Class | Class 9 |
| Answer Type | Text solution:1 |
| Upvotes | 23 |
