Question

Loud speaker A vibrates 200 times each second. Loud speaker B vibrates 400 times each

second.
a)What is the frequency of the sound produced by Loud speaker A? Give the value and
unit.
b)Which loudspeaker produces higher frequency of vibrations?

Answer 1

ANSWER is (B)

Step-by-step explanation:

jxkalxna,x The correct option is : The water will vibrate with less intensity

Answer 2

A. 200 Hz

B. Speaker B.

Step-by-step explanation:

We'll begin by defining the frequency.

The frequency of a wave is defined as the number of vibrations made in 1 second. Mathematically it can be represented as:

Frequency (f) = number of vibration (n) / time (t)

f = n / t

A. Determination of the frequency produced by loud speaker A.

Number of vibrations (n) = 200

Time (t) = 1 s

Frequency (f) =?

f = n / t

f = 200 / 1

f = 200 Hz

B. Determination of the loudspeaker that produces the highest frequency of vibrations.

We shall determine the frequency produced by each speaker. This is illustrated below:

For speaker A:

Number of vibrations (n) = 200

Time (t) = 1 s

Frequency (f) =?

f = n / t

f = 200 / 1

f = 200 Hz

For speaker B:

Number of vibrations (n) = 400

Time (t) = 1 s

Frequency (f) =?

f = n / t

f = 400 / 1

f = 400 Hz

SUMMARY:

Speaker >>>> Frequency

A >>>>>>>>>> 200 Hz

B >>>>>>>>>> 400 Hz

From the above illustration, speaker B produces the highest frequency of vibration.