Question 1

Vibration is also known as
A)Vibratory motion
B)Translatory motion
C)Oscillatory motion
D)None of these

Accepted Answer

C

Question 2

Frequency is expressed in
A)Kilometer
B)Hertz
C)gram
D)Degree centigrade

Accepted Answer

Frequency is expressed in Hertz (Hz), which measures the number of cycles per second of a periodic phenomenon.

Question 3

The number of oscillations per second is called
A)Amplitude of oscillation
B)Pitch of oscillation
C)Frequency of oscillation
D)None of the bove

Accepted Answer

The number of oscillations per second is defined as the frequency of oscillation.

Question 4

When the amplitude of vibration is large, sound produced is
A)No sound
B)feeble
C)loud
D)No relation between amplitude and sound

Accepted Answer

The amplitude of vibration is directly related to the loudness of the sound. A larger amplitude results in a louder sound.

Question 5

An ultrasound equipment works at frequency
A)Higher than 20,000 Hz
B)Higher than 10,000 Hz
C)Lower than 20,000 Hz
D)Lower than 10,000 Hz

Accepted Answer

Ultrasound equipment operates at frequencies higher than 20,000 Hz, which is above the upper limit of human hearing.

Question 6

Voice of man is heavy compared to a woman because
A)Female vocal cord is longer
B)Male vocal cord is shorter
C)Male vocal cord is longer
D)The concept is not related

Accepted Answer

Male vocal cords are generally longer than female vocal cords, which contributes to the lower pitch or heavier voice typically observed in men compared to women. Longer vocal cords vibrate at a lower frequency, producing deeper sounds.

Quiz 1: The Basics of Sound and Vibration

Vibration is also known as

Frequency is expressed in

The number of oscillations per second is called

When the amplitude of vibration is large, sound produced is

An ultrasound equipment works at frequency

Voice of man is heavy compared to a woman because