Match List - I with List - II Choose the correct answer from the options given below:
List-I List-II (A) Microwave (I) Radar System for Aircraft Navigation (B) UV Rays (II) To study crystal structure (C) X-Rays (III) Radioactive decay of Nucleus (D) Gamma-Rays (IV) Lasik eye surgery
(A)-(II), (B)-(IV), (C)-(III), (D)-(I)
Microwaves are used in radar systems for aircraft navigation (I). UV rays are used in Lasik eye surgery (IV). X-rays are used to study crystal structures (II). Gamma rays are associated with the radioactive decay of the nucleus (III).
Important Questions from Electromagnetic Waves
In an electromagnetic wave, the ratio of energy densities of electric and magnetic fields is:
What will be the time taken by light to travel 2cm thickness of glass of refractive index 1.5?
Calculate the ratio of the range of a transmitting antenna of height 64 m to the receiving antenna of height 16 m:
A plane electromagnetic wave of frequency 30 MHz travels in free space along the x-direction. At a particular point in space and time, \(\vec{E}\)=6.3j^V/m. The \(\vec{B}\) at this point would be:
When a capacitor is subjected to a D.C. source it takes a small time interval to get fully charged up. During this small-time interval, there is no passage of charge through the dielectric, yet we use a term - displacement current. This term is used because:
