Questions

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11 questions · timed · auto-graded

Question 11 Mark
Fill in the following blanks with suitable word: When the frequency of the sound is increased, the wavelength ______.
Answer
When the frequency of the sound is increased, the wavelength decreases.
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Question 21 Mark
Fill in the following blanks with suitable word: Loudness of sound depends on _____.
Answer
Loudness of sound depends on amplitude.
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Question 31 Mark
Fill in the following blanks with suitable word: Sound cannot travel through _____.
Answer
Sound cannot travel through vacuum.
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Question 41 Mark
Fill in the following blanks with suitable word: An echo is simply a ______ Sound.
Answer
An echo is simply a reflected Sound.
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Question 51 Mark
Fill in the following blanks with suitable word: Sound is caused by _____.
Answer
Sound is caused by vibrations.
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Question 61 Mark
Fill in the following blanks with suitable word: Wave speed in metres per second equals frequency in _____ Multiplied by ______ in ______.
Answer
Wave speed in metres per second equals frequency in Hertz Multiplied by wavelength in metres.
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Question 71 Mark
Fill in the following blanks with suitable word: The speed of sound in a solid is ____ than the speed of sound in air.
Answer
The speed of sound in a solid is greater than the speed of sound in air.
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Question 81 Mark
Fill in the following blanks with suitable word: Echoes are caused by the ______ of sound.
Answer
Echoes are caused by the reflection of sound.
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Question 91 Mark
Fill in the following blanks with suitable word: A sound wave consists of places of higher pressure called _____ and places of _____ pressure called _____.
Answer
A sound wave consists of places of higher pressure called compressions and places of lower pressure called rarefactions.
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Question 101 Mark
Fill in the following blanks with suitable word: Pitch od sound depends on ______.
Answer
Pitch od sound depends on frequency.
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Question 111 Mark
Fill in the following blanks with suitable word: Quality of sound depends on _____.
Answer
Quality of sound depends on waveform.
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Fill in the blank - Science STD 9 Questions - Vidyadip