Verified Solution • 2025–26 Session
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QJEEM23Phaa04: JEE Main 2023 Physics - Class 12 JEEM23Phaa04 Solution: Given below are two statements: one is labelled as Assertion A…
Given below are two statements: one is labelled as Assertion
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 given statements, choose the correct answer from the options given below.
Multiple Choice Options
- A Both A and R are true but R is NOT the correct explanation of A
- B A is true but R is false
- C Both A and R are true and r is the correct explanation of A
- D A is false but R is true
Step-by-Step Verified Solution
Optical communication is performed in the frequency range of to . (Microwave to UV)
So, EM waves used for optical communication have shorter wavelength than that of microwaves used in RADAR.
Also, U_{\text {INFRARED }}>U_{\text {MICROWAVE }}
Infrared EM waves are more energetic than microwave
So, EM waves used for optical communication have shorter wavelength than that of microwaves used in RADAR.
Also, U_{\text {INFRARED }}>U_{\text {MICROWAVE }}
Infrared EM waves are more energetic than microwave