Sound

Total Questions: 16

1 - Sound cannot travel through---:
A ) Vacuum ✅
B ) Water
C ) Sand
D ) Air

2 - اواز کا ٹکرا کر واپس انا کیا کہلاتا ہے؟
A ) Refraction
B ) Reflection ✅
C ) Diffraction
D ) None of these

3 - What is the speed of sound in air ?

A ) 1347 km/h
B ) 1235 km/h ✅
C ) 1290 km/h
D ) 1495 km/h

4 - Speed of sound maximum in-----?
A ) Gas
B ) Liquid
C ) Solid ✅
D ) Vacuum

5 - Among the following mediums velocity of sound is the maximum in?

A ) Air
B ) Steel ✅
C ) Water
D ) Vacuum

6 - The frequency of sound in air is measured in---:
A ) Watts
B ) Hertz ✅
C ) Joules
D ) Decibels

7 - Speed of sound will be the maximum in---:
A ) Air at zero degree
B ) Water at 25 degree
C ) Water at 90 degree ✅
D ) None of these

8 - The speed of sound is minimum in----:
A ) Steel
B ) Water at 25 degree
C ) Air at 0 degree ✅
D ) None of these

9 - What is the speed of sound in tissue?

A ) 1530 m/s
B ) 1540 m/s ✅
C ) 1550 m/s
D ) None

10 - How many time sound travel faster than air:
A ) Two
B ) Three
C ) Four ✅
D ) None of these

11 - What is the freezing point of water in Fahrenheit
A ) 32 °F ✅
B ) 36° F
C ) 38°F
D ) 39°F

12 - Which of the following is a property of sound waves?

A ) They required a medium to travel ✅
B ) They can travel through a vacuum
C ) They are transverse waves
D ) They are electromagnetic waves

13 - What is the effect of higher frequency on sound waves?

A ) Higher pitch ✅
B ) More diffraction
C ) Lower pitch
D ) More absorption

14 - Which of these factors does not affect sound velocity?

A ) Temperature
B ) Frequency ✅
C ) Humidity
D ) Medium

15 - The amplitude of sound determines the:
A ) Frequency
B ) Speed
C ) Volume ✅
D ) Pitch

16 - The volume of water expands what percent at freezing?

A ) 3%
B ) 5 %
C ) 6%
D ) 9% ✅
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