Question

Q14.
If the circular frequency is 30π radians per minute, the time period is
(a) 1 second
(b) 2 second
(c) 4 second
(d) None of the above​

Answer 1

Answer:

option d

Explanation:

hope gonna help

Answer 2

Given : circular frequency 30π radians per minute

To find:   time period (T)

Solution:

Circular frequency or  angular frequency (ω), also known as radial or circular frequency, measures angular displacement per unit time. Its units are therefore degrees (or radians) per second.

Circular frequency or angular frequency    ω = 2π f    

f = frequency

f = 1/T

T= time period

      ω = 2π.(1/T)  

ω = 30π radians per minute

=> 30π = 2π.(1/T)

=>  15 = 1/T

=> T = 1/15  min

=> T =0.067 min.

None of the given option matches

Hence option D is correct  

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