Beats are the result of
Diffraction
Destructive interference
Constructive and destructive interference
Superposition of two waves of nearly equal frequency
Beat -
A phenomena resuits when two sound wave having equal amplitude and travelling in a medium in the same direction but having slightly different frequency.
-
Option 1)
Diffraction
This is incorrect
Option 2)
Destructive interference
This is incorrect
Option 3)
Constructive and destructive interference
This is incorrect
Option 4)
Superposition of two waves of nearly equal frequency
This is correct
Study 40% syllabus and score up to 100% marks in JEE