Physics Crash Course JEE Main>Chapter 17 - Electromagnetic Waves>Level 1>Q 12

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IMPORTANT

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An electromagnetic wave going through a vacuum is described by $E = E_{0} \sin (k x - ω t)$ , $B = B_{0} \sin (k x - ω t)$ . Then

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Important Questions on Electromagnetic Waves

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IMPORTANT

Physics Crash Course JEE Main>Chapter 17 - Electromagnetic Waves>Level 1>Q 13

The electromagnetic waves do not transport

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IMPORTANT

Physics Crash Course JEE Main>Chapter 17 - Electromagnetic Waves>Level 1>Q 14

Which of the following radiations has the least wavelength?

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Physics Crash Course JEE Main>Chapter 17 - Electromagnetic Waves>Level 1>Q 15

The energy of electromagnetic wave in vacuum is given by the relation

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Physics Crash Course JEE Main>Chapter 17 - Electromagnetic Waves>Level 1>Q 16

The waves used in telecommunication are

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Physics Crash Course JEE Main>Chapter 17 - Electromagnetic Waves>Level 1>Q 17

The frequencies of

X

-rays,

γ

-rays and ultraviolet rays are respectively

a, b

and

c

. Then

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IMPORTANT

Physics Crash Course JEE Main>Chapter 17 - Electromagnetic Waves>Level 1>Q 18

An accelerated electron would produce

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Physics Crash Course JEE Main>Chapter 17 - Electromagnetic Waves>Level 1>Q 19

The magnetic field in a plane electromagnetic wave is given by

B_{y} = 2 \times 10^{- 7} \sin (0.5 \times 10^{3} x + 1.5 \times 10^{11} t)

. This electromagnetic wave is

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IMPORTANT

Physics Crash Course JEE Main>Chapter 17 - Electromagnetic Waves>Level 1>Q 20

In a plane electromagnetic wave, the directions of electric field and magnetic field are represented by

\hat{k}

and

2 \hat{i} - 2 \hat{j}

, respectively. What is the unit vector along direction of propagation of the wave.