Question

This question has statement-1 and statement-2 of four choices is given after the statements chosen the one that best describes the two statements.
Statement-1: out of the radio wave and microwaves, the radio waves undergo more diffraction.
Statement-2: radio waves have great frequency compared to microwaves.
(A) Statement 1 is true, Statement 2 is true and statement 2 is the correct explanation of Statement 1.
(B) Statement 1 is false, Statement 2 is true.
(C) Statement 1 is true, Statement 2 is false.
(D) Statement 1 is true, Statement 2 is true and Statement 2 is not the correct explanation of Statement 1.

Answer 1

Hint : first of all we have to understand the characteristics of the radio waves and microwaves. And then we can compare their frequencies. This will lead us to the required answer. Radio waves and microwaves are different by their frequencies.

Complete Step By Step Answer:
Radio waves and microwaves are both at the long wavelength end of the electromagnetic spectrum. Radio waves are the types of electromagnetic radiation with wavelengths in the electromagnetic spectrum longer than infrared waves. Radio waves have frequencies as high as $300GHz{\text{ }}$ to as low as $30Hz$ . At $300GHz{\text{ }}$ , the corresponding wavelength is $1mm$ ; at $30Hz$ the corresponding wavelength is $10,000km$ . These waves are used to communicate throughout the long distance. Microwave is a type of electromagnetic radiation with wavelengths ranging from about one meter to one millimeter corresponding to frequencies between $300\;MHz$ and $300GHz{\text{ }}$ respectively. These waves are used to produce heat to cook food in a microwave oven. The radio waves and microwaves are compared by diffraction and their frequencies. Here radio waves have lower frequency than that of the microwaves. The radio waves undergo more diffraction than that of the microwaves.
Hence, we have concluded that the statement 1 is true and statement 2 is false.
Thus, the correct answer is option C.

Note :
We know that the electromagnetic spectrum is the range of frequencies of electromagnetic radiation and their respective wavelengths and photon energies. Electromagnetic radiation is classified by wavelength into radio waves, microwave, infrared, visible light, ultraviolet, X-rays and gamma rays. These spectrum lines show the difference between each radiation with the help of their frequencies.