Waves Questions with solutions MCQs

1. Which of the following statements is TRUE about transverse waves?

A

In transverse waves, the particles in the medium move parallel to the direction of propagation of wave

B

The transverse wave moves in the form of crest and troughs

C

The transverse waves move in the form of compressions and rarefactions

D

The transverse waves propagate in a medium which possesses elasticity of volume

Waves General Science
Correct Answer : B
Explanation :

The transverse wave moves in the form of crest and troughs

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2. Which of the following waves require a medium to travel?

A

Microwaves

B

X-rays

C

Light Waves

D

Sound Waves

Waves General Science
Correct Answer : D
Explanation :

Sound and water waves are mechanical waves; meaning, they require a medium to travel through.

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3. A wave travels through a medium because

A

the medium`s particles are carried along with the wave

B

the wave`s energy passes from particle to particle

C

the medium transfers electromagnetic energy

D

the wave increases the potential two spherical energy

Waves General Science
Correct Answer : B
Explanation :

A wave is an propagation of energy along a medium. Waves need a medium in order for them to travel from one point or another. A wave is a particulate transfer of motion from one point to another. A very good example of the need of a medium is regarding sound. Sound cannot travel through a vacuum. This is because there are no air molecules to transfer the energy of the sound propagation. Hence no sound travels through the vacuum. The particle to particle interaction and vibration results in the transfer of energy in a wave propagation.

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4. Which of the following characteristic(s) of a sound wave determine the loudness of the sound?
i) Frequency
ii) Amplitude
iii) Timbre

A

only i and ii

B

only iii

C

only ii

D

only i and iii

Waves General Science
Correct Answer : C
Explanation :

The amplitude of a sound wave determines its loudness or volume. A larger amplitude means a louder sound, and a smaller amplitude means a softer sound

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5. The number of oscillations or vibrations per second in a wave is called _______.

A

Time Period

B

Amplitude

C

Frequency

D

Wavelength

Waves Health Educator Set 2
Correct Answer : C
Explanation :

The number of oscillations per second of a vibrating object is known as its frequency. Time period is the time required to complete one oscillation. Loudness of a sound is proportional to the square of the amplitude of its vibration.

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