Question: Q. 1. Name the phenomenon which shows the quantum nature of electromagnetic radiation.
U[O.D. I, II, III 2017]
Show Answer
Solution:
Ans. Photoelectric Effect (Raman Effect/Compton Effect)
[CBSE Marking Scheme, 2017]
[AI Q. 2. Why are microwaves considered suitable for radar systems used in aircraft navigation?
U] [Delhi I, II, III 2016]
Ans. Due to their short wavelength.
1
[CBSE Marking Scheme 2016]
Detailed Answer :
Microwaves are considered good for radar systems used in aircraft navigation as these waves have shorter wavelength range from $10^{-3} \mathrm{~m}$ to $0.1 \mathrm{~m}$, which makes them suitable for long range communication as high frequencies used to bounce from even smallest aircraft.
