Verified Solution • 2025–26 Session moderate

QAIPMT-2009-Ph-2164: NEET 2009 Physics - Class 12 AIPMT-2009-Ph-2164 Solution: The electric field part of an electromagnetic wave in a medium…

The electric field part of an electromagnetic wave in a medium is represented by Ex=0; Ey=2.5 N/Ccos⁡[(2π×106 rad/m)t−(π×10−2 rad/s)x]; Ez=0E_x=0;\ E_y=2.5\ \text{N/C}\cos[(2\pi\times10^6\ \text{rad/m})t-(\pi\times10^{-2}\ \text{rad/s})x];\ E_z=0.

Multiple Choice Options

  • A moving along x direction with frequency 10610^6 Hz and wavelength 100 m.
  • B moving along x direction with frequency 10610^6 Hz and wavelength 200 m.
  • C moving along -x direction with frequency 10610^6 Hz and wavelength 200 m.
  • D moving along y direction with frequency 2π×1062\pi\times10^6 Hz and wavelength 200 m.

Step-by-Step Verified Solution

Since coefficient of x is negative, but is moving along +ve x-axis, so This is the form E y = E 0 ( _ t � kx) _ = 2 � _ 10 6 f = _ 2 � = 10 6 Hz k = � _ 10 _ 2 Also, _ = 2 � k = 2 � � _ 10 _ 2 = 200 m

Related Learning Resources & Exam Preparation

NEET PYQ Question Bank
Browse year-wise authentic previous years' questions with solutions
Authentic CBT Mock Tests
Simulate official exam environment with live timer and percentile scoring