QBManager

Electromagnetic Wave

155497 Let $\vec{E}$ and $\vec{B}$ are electric and magnetic field in an electromagnetic wave. Identify the correct option.

1

\vec{E} = E_{0} \sin ω (t - \frac{x}{c}) \hat{j}, \vec{B} = B_{0} \sin ω (t - \frac{x}{c}) \hat{k}

2

\vec{E} = E_{0} \sin ω (t - \frac{y}{c}) \hat{j}, \vec{B} = B_{0} \sin ω (t - \frac{z}{c}) \hat{k}

3

\vec{E} = E_{0} \sin ω (t - \frac{x}{c}) \hat{i}, \vec{B} = B_{0} \sin ω (t - \frac{x}{c}) \hat{i}

4

\vec{E} = E_{0} \sin^{2} ω (t - \frac{x}{c}) \hat{j}, \vec{B} = B_{0} \sin^{2} ω (t - \frac{x}{c}) \hat{k}

Explanation:

A If $\vec{E} & \vec{B}$ are travelling in $\hat{j} & \hat{k}$ direction then direction of propagation of EM wave would be in $\hat{i}$ direction.

TS EAMCET 31.07.2022

Electromagnetic Wave

155499 If $E$ and $B$ be the electric and magnetic field vectors of electromagnetic waves, the direction of propagation of electromagnetic waves is that of-

1

E

2

B

3

E \times B

4

B \times E

Explanation:

C If $\vec{E} & \vec{B}$ are the electric \& magnetic field vector of EM wave then $\vec{E} & \vec{B}$ are perpendicular to each other, then direction of propagation of EM wave . is $(\vec{E} \times \vec{B})$ .

AP EAMCET-05.10.2021

Electromagnetic Wave

155504 The Nobel laureate ABDUS SALAM is known for discovery of

1 Wave nature of matter

2 Cyclotron

3 Unification of weak and electromagnetic interactions

4 Cosmic radiation

TS EAMCET 28.09.2020

Electromagnetic Wave

155505 Electromagnetic waves are produced by

1 Charges at rest only

2 Changes in uniform motion only

3 Accelerated or decelerated changes only

4 An unchanged stable particle at rest

AP EAMCET (18.09.2020) Shift-II

Electromagnetic Wave

155507 Which of the following has/have zero average value in a plane electromagnetic wave?

1 Both magnetic and electric fields

2 Electric field only

3 Magnetic field only

4 Magnetic energy

Explanation:

A Both electric \& magnetic field in EM wave are sinusoidal in nature $&$ the average value of sinusoidal wave is zero.
Hence, both electric and magnetic field have zero average value in a plane EM wave.

COMEDK 2020

Electromagnetic Wave

155497 Let $\vec{E}$ and $\vec{B}$ are electric and magnetic field in an electromagnetic wave. Identify the correct option.

1

\vec{E} = E_{0} \sin ω (t - \frac{x}{c}) \hat{j}, \vec{B} = B_{0} \sin ω (t - \frac{x}{c}) \hat{k}

2

\vec{E} = E_{0} \sin ω (t - \frac{y}{c}) \hat{j}, \vec{B} = B_{0} \sin ω (t - \frac{z}{c}) \hat{k}

3

\vec{E} = E_{0} \sin ω (t - \frac{x}{c}) \hat{i}, \vec{B} = B_{0} \sin ω (t - \frac{x}{c}) \hat{i}

4

\vec{E} = E_{0} \sin^{2} ω (t - \frac{x}{c}) \hat{j}, \vec{B} = B_{0} \sin^{2} ω (t - \frac{x}{c}) \hat{k}

Explanation:

A If $\vec{E} & \vec{B}$ are travelling in $\hat{j} & \hat{k}$ direction then direction of propagation of EM wave would be in $\hat{i}$ direction.

TS EAMCET 31.07.2022

Electromagnetic Wave

155499 If $E$ and $B$ be the electric and magnetic field vectors of electromagnetic waves, the direction of propagation of electromagnetic waves is that of-

1

E

2

B

3

E \times B

4

B \times E

Explanation:

C If $\vec{E} & \vec{B}$ are the electric \& magnetic field vector of EM wave then $\vec{E} & \vec{B}$ are perpendicular to each other, then direction of propagation of EM wave . is $(\vec{E} \times \vec{B})$ .

AP EAMCET-05.10.2021

Electromagnetic Wave

155504 The Nobel laureate ABDUS SALAM is known for discovery of

1 Wave nature of matter

2 Cyclotron

3 Unification of weak and electromagnetic interactions

4 Cosmic radiation

TS EAMCET 28.09.2020

Electromagnetic Wave

155505 Electromagnetic waves are produced by

1 Charges at rest only

2 Changes in uniform motion only

3 Accelerated or decelerated changes only

4 An unchanged stable particle at rest

AP EAMCET (18.09.2020) Shift-II

Electromagnetic Wave

155507 Which of the following has/have zero average value in a plane electromagnetic wave?

1 Both magnetic and electric fields

2 Electric field only

3 Magnetic field only

4 Magnetic energy

Explanation:

A Both electric \& magnetic field in EM wave are sinusoidal in nature $&$ the average value of sinusoidal wave is zero.
Hence, both electric and magnetic field have zero average value in a plane EM wave.

COMEDK 2020

Electromagnetic Wave

155497 Let $\vec{E}$ and $\vec{B}$ are electric and magnetic field in an electromagnetic wave. Identify the correct option.

1

\vec{E} = E_{0} \sin ω (t - \frac{x}{c}) \hat{j}, \vec{B} = B_{0} \sin ω (t - \frac{x}{c}) \hat{k}

2

\vec{E} = E_{0} \sin ω (t - \frac{y}{c}) \hat{j}, \vec{B} = B_{0} \sin ω (t - \frac{z}{c}) \hat{k}

3

\vec{E} = E_{0} \sin ω (t - \frac{x}{c}) \hat{i}, \vec{B} = B_{0} \sin ω (t - \frac{x}{c}) \hat{i}

4

\vec{E} = E_{0} \sin^{2} ω (t - \frac{x}{c}) \hat{j}, \vec{B} = B_{0} \sin^{2} ω (t - \frac{x}{c}) \hat{k}

Explanation:

A If $\vec{E} & \vec{B}$ are travelling in $\hat{j} & \hat{k}$ direction then direction of propagation of EM wave would be in $\hat{i}$ direction.

TS EAMCET 31.07.2022

Electromagnetic Wave

155499 If $E$ and $B$ be the electric and magnetic field vectors of electromagnetic waves, the direction of propagation of electromagnetic waves is that of-

1

E

2

B

3

E \times B

4

B \times E

Explanation:

C If $\vec{E} & \vec{B}$ are the electric \& magnetic field vector of EM wave then $\vec{E} & \vec{B}$ are perpendicular to each other, then direction of propagation of EM wave . is $(\vec{E} \times \vec{B})$ .

AP EAMCET-05.10.2021

Electromagnetic Wave

155504 The Nobel laureate ABDUS SALAM is known for discovery of

1 Wave nature of matter

2 Cyclotron

3 Unification of weak and electromagnetic interactions

4 Cosmic radiation

TS EAMCET 28.09.2020

Electromagnetic Wave

155505 Electromagnetic waves are produced by

1 Charges at rest only

2 Changes in uniform motion only

3 Accelerated or decelerated changes only

4 An unchanged stable particle at rest

AP EAMCET (18.09.2020) Shift-II

Electromagnetic Wave

155507 Which of the following has/have zero average value in a plane electromagnetic wave?

1 Both magnetic and electric fields

2 Electric field only

3 Magnetic field only

4 Magnetic energy

Explanation:

A Both electric \& magnetic field in EM wave are sinusoidal in nature $&$ the average value of sinusoidal wave is zero.
Hence, both electric and magnetic field have zero average value in a plane EM wave.

COMEDK 2020

Electromagnetic Wave

155497 Let $\vec{E}$ and $\vec{B}$ are electric and magnetic field in an electromagnetic wave. Identify the correct option.

1

\vec{E} = E_{0} \sin ω (t - \frac{x}{c}) \hat{j}, \vec{B} = B_{0} \sin ω (t - \frac{x}{c}) \hat{k}

2

\vec{E} = E_{0} \sin ω (t - \frac{y}{c}) \hat{j}, \vec{B} = B_{0} \sin ω (t - \frac{z}{c}) \hat{k}

3

\vec{E} = E_{0} \sin ω (t - \frac{x}{c}) \hat{i}, \vec{B} = B_{0} \sin ω (t - \frac{x}{c}) \hat{i}

4

\vec{E} = E_{0} \sin^{2} ω (t - \frac{x}{c}) \hat{j}, \vec{B} = B_{0} \sin^{2} ω (t - \frac{x}{c}) \hat{k}

Explanation:

A If $\vec{E} & \vec{B}$ are travelling in $\hat{j} & \hat{k}$ direction then direction of propagation of EM wave would be in $\hat{i}$ direction.

TS EAMCET 31.07.2022

Electromagnetic Wave

155499 If $E$ and $B$ be the electric and magnetic field vectors of electromagnetic waves, the direction of propagation of electromagnetic waves is that of-

1

E

2

B

3

E \times B

4

B \times E

Explanation:

C If $\vec{E} & \vec{B}$ are the electric \& magnetic field vector of EM wave then $\vec{E} & \vec{B}$ are perpendicular to each other, then direction of propagation of EM wave . is $(\vec{E} \times \vec{B})$ .

AP EAMCET-05.10.2021

Electromagnetic Wave

155504 The Nobel laureate ABDUS SALAM is known for discovery of

1 Wave nature of matter

2 Cyclotron

3 Unification of weak and electromagnetic interactions

4 Cosmic radiation

TS EAMCET 28.09.2020

Electromagnetic Wave

155505 Electromagnetic waves are produced by

1 Charges at rest only

2 Changes in uniform motion only

3 Accelerated or decelerated changes only

4 An unchanged stable particle at rest

AP EAMCET (18.09.2020) Shift-II

Electromagnetic Wave

155507 Which of the following has/have zero average value in a plane electromagnetic wave?

1 Both magnetic and electric fields

2 Electric field only

3 Magnetic field only

4 Magnetic energy

Explanation:

A Both electric \& magnetic field in EM wave are sinusoidal in nature $&$ the average value of sinusoidal wave is zero.
Hence, both electric and magnetic field have zero average value in a plane EM wave.

COMEDK 2020

Electromagnetic Wave

155497 Let $\vec{E}$ and $\vec{B}$ are electric and magnetic field in an electromagnetic wave. Identify the correct option.

1

\vec{E} = E_{0} \sin ω (t - \frac{x}{c}) \hat{j}, \vec{B} = B_{0} \sin ω (t - \frac{x}{c}) \hat{k}

2

\vec{E} = E_{0} \sin ω (t - \frac{y}{c}) \hat{j}, \vec{B} = B_{0} \sin ω (t - \frac{z}{c}) \hat{k}

3

\vec{E} = E_{0} \sin ω (t - \frac{x}{c}) \hat{i}, \vec{B} = B_{0} \sin ω (t - \frac{x}{c}) \hat{i}

4

\vec{E} = E_{0} \sin^{2} ω (t - \frac{x}{c}) \hat{j}, \vec{B} = B_{0} \sin^{2} ω (t - \frac{x}{c}) \hat{k}

Explanation:

A If $\vec{E} & \vec{B}$ are travelling in $\hat{j} & \hat{k}$ direction then direction of propagation of EM wave would be in $\hat{i}$ direction.

TS EAMCET 31.07.2022

Electromagnetic Wave

155499 If $E$ and $B$ be the electric and magnetic field vectors of electromagnetic waves, the direction of propagation of electromagnetic waves is that of-

1

E

2

B

3

E \times B

4

B \times E

Explanation:

C If $\vec{E} & \vec{B}$ are the electric \& magnetic field vector of EM wave then $\vec{E} & \vec{B}$ are perpendicular to each other, then direction of propagation of EM wave . is $(\vec{E} \times \vec{B})$ .

AP EAMCET-05.10.2021

Electromagnetic Wave

155504 The Nobel laureate ABDUS SALAM is known for discovery of

1 Wave nature of matter

2 Cyclotron

3 Unification of weak and electromagnetic interactions

4 Cosmic radiation

TS EAMCET 28.09.2020

Electromagnetic Wave

155505 Electromagnetic waves are produced by

1 Charges at rest only

2 Changes in uniform motion only

3 Accelerated or decelerated changes only

4 An unchanged stable particle at rest

AP EAMCET (18.09.2020) Shift-II

Electromagnetic Wave

155507 Which of the following has/have zero average value in a plane electromagnetic wave?

1 Both magnetic and electric fields

2 Electric field only

3 Magnetic field only

4 Magnetic energy

Explanation:

A Both electric \& magnetic field in EM wave are sinusoidal in nature $&$ the average value of sinusoidal wave is zero.
Hence, both electric and magnetic field have zero average value in a plane EM wave.

COMEDK 2020

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