In reference to the radio waves, choose the incorrect statements:

(A) Radio waves are the longest wavelength electromagnetic waves.
(B) Radio waves are deviated by electric and magnetic fields.
(C) Radio waves are diffracted easily.
(D) Radio waves are not electromagnetic waves.

Choose the correct answer from the options given below:

(B) and (D) only

The correct answer is Option (4) → (B) and (D) only

Statement (A) : Radio waves are the longest wavelength electromagnetic waves. This statement is correct. Among all electromagnetic waves, radio waves possess the longest wavelengths and lowest frequencies.

Statement (B) : Radio waves are deviated by electric and magnetic fields. This statement is incorrect. Radio waves are electromagnetic waves and do not carry charge, so they are not deflected by electric or magnetic fields.

Statement (C) : Radio waves are diffracted easily. This statement is correct. Due to their long wavelengths, radio waves can bend around obstacles easily and hence undergo diffraction readily.

Statement (D) : Radio waves are not electromagnetic waves.This statement is incorrect because radio waves are a part of the electromagnetic spectrum.