Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R.
Assertion A : EM waves used for optical communication have longer wavelengths than that of microwave, employed in Radar technology.
Reason R : Infrared EM waves are more energetic than microwaves, (used in Radar)
In the light of above, statements, choose the correct answer from the options given below.

For Assertion A:

Optical communication uses infrared or visible light, which has a higher frequency and shorter wavelength than the microwaves used in Radar technology ($$\lambda_{\text{optical}} < \lambda_{\text{microwave}}$$). Therefore, Assertion A is false.

For Reason R:

Photon energy is inversely proportional to wavelength ($$E = \frac{hc}{\lambda}$$). Since infrared waves have shorter wavelengths than microwaves, they are more energetic ($$E_{\text{infrared}} > E_{\text{microwave}}$$). Therefore, Reason R is true.