Which of the following rays are not electromagnetic waves?

Which of the following is / are not electromagnetic wave?

Which of the following are not electromagnetic waves? (i) sound waves (ii) radiowaves (iii) X rays (iv) water waves

Which of the following are not electromagnetic waves?

which of the following are not electromagnetic waves ?

Which of the following are not electromagnetic waves ?

Which of the following are not electro magnetic waves : (i) alpha -rays " " (ii) beta -rays (iii) lambda -rays " " (iv) cosmic rays (v) radio waves " " (vi) sound waves ?

Which of the following is not an electromagnetic wave?