Question 1.
Which phenomenon is responsible for the echo of
sound wave?
A. Reflection
B. Refraction
C. Interference
D. Polarisation
Ans: A. Reflection
Question 2.
Echolocation is an adaptation bats use to
A. Locate flowering plants
B. Hunt insects in flight
C. Find warm places for hibernation
D. All of the above
Ans: D. All of the above
Question 3.
Speed of sound in air is unaffected by change in
A. Pressure
B. Humidity
C. Temperature
D. Volume
Ans: A. Pressure
Question 4.
Loudness of sound depends on
A. Frequency
B. Wavelength
C. Amplitude
D. Pitch
Ans: C. Amplitude
Question 5.
Bats can sense obstacles because they produce
A. Supersonic sound waves
B. Ultrasonic sound waves
C. Infrasonic sound waves
D. Micro sound waves
Ans: B. Ultrasonic sound waves
Question 6.
RADAR is used for
A. Detecting and locating the position of objects such as Aeroplanes
B. Locating submerged submarines
C. Locating geostationary satellites
D. Receiving a signals in a radio receiver
Ans: A. Detecting an A. Detecting and locating the position of objects such as Aeroplanes
Question 7.
Which one of the following animals can hear
ultrasonic sound ?
A. Rat
B. Squirrel
C. Cat
D. Bat
Ans: D. Bat
Question 8.
A wavelength of 0.3 m is produced in air and it
travels at a speed of 300 m/s. Then it will be an
A. Audible wave
B. Infrasonic wave
C. Ultrasonic wave
D. Microwave
Ans: A. Audible wave
Question 9.
What is the minimum distance (in metres) required to
hear an echo?
A. 10
B. 13
C. 17
D. 21
Ans: C. 17
Question 10.
The instrument which uses sound waves to measure the
depth of oceans is
A. Radar
B. Sonar
C. Altimeter
D. Venturimeter
Ans: B. Sonar
Question 11.
Which term is not associated with sound wave?
A. Hertz
B. Decibel
C. Candela
D. Mach
Ans: C. Candela
Question 12.
Sound travels fastest in
A. Vacuum
B. Air
C. Glass
D. Water
Ans: C. Glass
Question 13.
Megahertz is a measurement of
A. Frequency
B. Speed
C. Wavelength
D. Capacity
Ans: A. Frequency
Question 14.
Velocity of sound in air does not depend on
A. Density of air
B. Temperature of air
C. Pressure of air
D. Humidity of air
Ans: C. Pressure of air
Question 15.
Which among the following determines the pitch of a
sound?
A. Amplitude
B. Frequency
C. Loudness
D. Wavelength
Ans: B. Frequency
Physics GK MCQs all set
- Physics MCQs Set-1
- Physics MCQs Set-2
- Physics MCQs Set-3
- Physics MCQs Set-4
- Physics MCQs Set-5
- Physics MCQs Set-6
- Physics MCQs Set-7
- Physics MCQs Set-8
- Physics MCQs Set-9
- Physics MCQs Set-10
- Physics MCQs Set-11
- Physics MCQs Set-12
- Physics MCQs Set-13
- Physics MCQs Set-14
- Physics MCQs Set-15
- Physics MCQs Set-16
- Physics MCQs Set-17
- Physics MCQs Set-18
- Physics MCQs Set-19
- Physics MCQs Set-20
- Physics MCQs Set-21
- Physics MCQs Set-22
- Physics MCQs Set-23
- Physics MCQs Set-24
- Physics MCQs Set-25
- Physics MCQs Set-26
- Physics MCQs Set-27
- Physics MCQs Set-28
- Physics MCQs Set-29
- Physics MCQs Set-30
- Physics MCQs Set-31
- Physics MCQs Set-32
- Physics MCQs Set-33
- Physics MCQs Set-34
- Physics MCQs Set-35
- Physics MCQs Set-36
- Physics MCQs Set-37
- Physics MCQs Set-38
- Physics MCQs Set-39
- Physics MCQs Set-40
- Physics MCQs Set-41
- Physics MCQs Set-42
- Physics MCQs Set-43
- Physics MCQs Set-44
- Physics MCQs Set-45
- Physics MCQs Set-46
- Physics MCQs Set-47
- Physics MCQs Set-48
- Physics MCQs Set-49
- Physics MCQs Set-50
- Physics MCQs Set-51
- Physics MCQs Set-52
- Physics MCQs Set-53
- Physics MCQs Set-54
- Physics MCQs Set-55
- Physics MCQs Set-56
- Physics MCQs Set-57
- Physics MCQs Set-58
- Physics MCQs Set-59
- Physics MCQs Set-60
- Physics MCQs Set-61
- Physics MCQs Set-62
- Physics MCQs Set-63
- Physics MCQs Set-64
- Physics MCQs Set-65
- Physics MCQs Set-66
- Physics MCQs Set-67
- Physics MCQs Set-68
- Physics MCQs Set-69
- Physics MCQs Set-70
- Physics MCQs Set-71
- Physics MCQs Set-72
- Physics MCQs Set-73
- Physics MCQs Set-74
- Physics MCQs Set-75
- Physics MCQs Set-76
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