Question

Answer these questions please!!

3.If the time period of a sound wave is 15 sec then what is its frequency?
5. The sound wave of frequency 20Hz is produced in a medium , calculate its time period.

and if possible can you tell which book this is from...

Answer 1

Answer:

• (3) 0.066 Hz
• (5) 0.05 Second

Explanation:

Solution:-

3)

• Time Period ,T = 15 s

we have to calculate the frequency of the sound wave

As we know that the relationship between time period & frequency.

• T = 1/f

where,

• T denote Time period
• f denote frequency

Substitute the value we get

→ 15 = 1/f

→ f = 1/15

→ f = 0.066 Hz

• hence, the frequency of the sound wave is 0.066 Hertz.

(5)

Now,

we have to calculate Time period.

• Frequency ,f = 20 Hz

• T = 1/f

substitute the value we are

→ T = 1/20

→ T = 0.05 s

• Hence, the time period of the sound wave is 0.05 second.

Answer 2

Answer (3)

Given :-

Time taken = 15 sec

To Find :-

Frequency

Solution :-

As we know that

$\huge \bf \: T = \dfrac1F$

Here,

T is the Time

F is the Frequency

15 = 1/F

F = 1/15

F = 0.066 Hz

Hence :-

Frequency is 0.066 Hertz

Answer (5)

Given :-

• Frequency = 20 Hz

To Find :-

Time taken

Solution :-

As we know that

$\huge \bf \: T = \dfrac1F$

Here,

T is the Time

F is the Frequency

T = 1/20

T = 0.05 second.

Hence :-

Time taken is 0.05 second