Question

Consider the statement which is incorrect

a) The number of oscillations per second is called time period

b) The frequency determines the shrillnes or pitch

c) Partial disability is usually from birth

d) whistle has a high frequency therefore produces a sound of low Pitch

I) a , b incorrect. II) a , c incorrect

III) a , b and c incorrect IV) a , c and d incorrect​

Answer 1

Answer:

a, c, d are incorrect although the a is correct