Explanation:
The speed of a wave is given by :
 ......(1)
 ......(1)
(i) Here, the wavelength of a sound wave in air reduces by a factor of 3. Equation (1) becomes :

Wavelength and frequency are inversely proportional to each other. So, if wavelength of a sound wave in air reduces by a factor of 3, then the frequency will increases by a factor of 3.
(ii) It remains the same. 
 
        
             
        
        
        
Answer:
no answer
Explanation:
the question does not sk what to find
 
        
             
        
        
        
Answer:
option B is the correct answer 
Explanation:
please follow me and Mark me brainliest please 
 
        
             
        
        
        
Answer:
False
Explanation:
I learned it the hard way trust me T^T