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Sound Mock Tests

42 questions available

Sound Mock Test 1

Questions: 30

Sound Mock Test 2

Questions: 12

नमूना प्रश्न

Class 8 Science
The loudness of sound is measured in which unit?
A Hertz
B Desibel
C Decibel
D Newton
Class 8 Science
What is the minimum distance required for hearing an echo at room temperature?
A 10 m
B 17 m
C 25 m
D 50 m
Class 8 Science
In which of the following media does sound travel the fastest?
A Air
B Water
C Steel
D Vacuum
Class 8 Science
The SI unit of sound intensity (loudness) is:
A Hertz
B Decibel
C Watt
D Amperes
Class 9 Science
A sound wave has a frequency of 500 Hz and wavelength of 0.66 m. How long will it take to travel 330 m?
A 0.5 s
B 1 s
C 2 s
D 1.5 s
Class 9 Science
A sound wave has a frequency of 2 kHz and a wavelength of 15 cm. How long will it take to travel 3 km?
A 2 seconds
B 10 seconds
C 1 second
D 20 seconds
Class 9 Science
If a force of 50 N acts on an area of 5 m², what is the pressure exerted?
A 250 Pa
B 10 Pa
C 45 Pa
D 55 Pa
Class 8 Science
Sound waves cannot travel through:
A Air
B Water
C Steel
D Vacuum

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