TS EAMCET 2023 (Online) 13th May Evening Shift | Electromagnetic Waves Question 10 | Physics

The speed of electromagnetic waves in a medium is $1.5 \times 10^8 \mathrm{~ms}^{-1}$. If relative permittivity of that medium is 2 , then its magnetic susceptibility is (speed of light in vacuum is $3 \times 10^8 \mathrm{~ms}^{-1}$ ).

-1.5

TS EAMCET 2023 (Online) 12th May Evening Shift

MCQ (Single Correct Answer)

-0

The correct statement among the following is

Electromagnetic waves cannot travel in vacuum

Electromagnetic waves are longitudinal waves

Electromagnetic waves are produced by charges moving with uniform velocity

Electromagnetic waves carry both energy and momentum as they propagate through space.

TS EAMCET 2023 (Online) 12th May Morning Shift

MCQ (Single Correct Answer)

-0

If a plane electromagnetic wave has electric field oscillations of frequency 3 GHz , then the wavelength of the wave is (speed of light in vacuum $=3 \times 10^8 \mathrm{~ms}^{-1}$ )

0.1 m

0.2 m

100 m

0.003 m

TS EAMCET 2022 (Online) 20th July Evening Shift

MCQ (Single Correct Answer)

-0

In a plane EM wave, the electric field oscillates sinusoidally at a frequency of 30 MHz and amplitude $150 \mathrm{~V} / \mathrm{m}$, Identify the correct expression of $\mathbf{B}$ assuming the wave is propagating along $X$-axis and is oscillating along $Y$-axis.

$5 \times 10^{-7} \sin \left[\frac{x}{3}-6 \times 10^{+7} t\right] \hat{z} T$

$5 \times 10^{-7} \sin \left[\pi\left(\frac{x}{5}-6 \times 10^{+7} t\right)\right] \hat{\mathbf{z}} T$

$5 \times 10^{-7} \sin \left[\pi\left(\frac{x}{10}-3 \times 10^{+7} t\right)\right] \hat{z} T$

$5 \times 10^{-7} \sin \left[\pi\left(\frac{2 x}{5}-6 \times 10^{+8} t\right)\right] \hat{\mathbf{z}} T$

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