Complete Question
The complete question is shown on the first uploaded image
Answer:
Explanation:
From the question we are told that
The tension is
The length of the wire is 
The mass is 
Generally the frequency is mathematically represented as

=> 
=> 
Answer:
O pH is a measure of the concentration of H+ ions in a solution of an acid or base. The pH plots
the concentration of solutions in a range from 0-14.
Explanation:
pH is a measure of how acidic/basic water is. The range goes from 0 to 14, with 7 being neutral.
The wavelength of a wave determines how much it will diffract when it encounters an obstacle
It's refraction....When light bends on passing from one medium to another is refraction !