CBSE
#16
Class 12
Physics
Electromagnetic Waves 2021
Mcq
1M
Which of the following statements is NOT true about the properties of electromagnetic waves?
A. These waves do not require any material medium for propagation
B. Both $\vec{E}$ and $\vec{B}$ attain their maxima and minima at the same time
C. The energy in an EM wave is divided equally between electric and magnetic fields
D. Both $\vec{E}$ and $\vec{B}$ are parallel to each other
✅ Verified by Super Admin
CBSE
#18
Class 12
Physics
Electromagnetic Waves 2022
Mcq
1M
Match the following EM waves with their applications: Microwaves — P. Treatment of cancer Infrared — Q. Aircraft navigation (radar) UV rays — R. Remote controls Gamma rays — S. Water purification The correct match is
A. 1-P, 2-R, 3-S, 4-Q
B. 1-S, 2-P, 3-Q, 4-R
C. 1-Q, 2-R, 3-S, 4-P
D. 1-S, 2-R, 3-P, 4-Q
✅ Verified by Super Admin
CBSE
#19
Class 12
Physics
Electromagnetic Waves 2021
Mcq
1M
Which of the following statements is true for radio waves and gamma rays?
A. The energy of gamma rays is lesser than that of radio waves
B. The frequency of radio waves is higher than that of gamma rays
C. Radio waves and gamma rays have the same energy
D. The energy of radio waves is lesser than that of gamma rays
✅ Verified by Super Admin
