155628 In a certain region of space electric field $\vec{E}$ and magnetic field $\vec{B}$ are perpendicular to each other and an electron enters in region perpendicular to the direction of $\vec{B}$ and $\vec{E}$ both and moves undeflected, then velocity of electron is

155629 The electric field associated with an electromagnetic wave in vacuum is given by $E=\hat{i} 40 \cos \left(k z-6 \times 10^{8} t\right)$, where $E, z$ and $t$ are in volt $/ \mathrm{m}$, metre and second respectively. The value of wave vector $k$ is

155631 Which of the following statement is false for the properties of electromagnetic waves ?

155632 The electric field part of an electromagnetic wave in a medium is represented by $E_{x}=0$;
$E_{y}=2.5 \frac{N}{C} \cos \left[\left(2 \pi \times 10^{6} \frac{\mathrm{rad}}{\mathrm{s}}\right) t-\left(\pi \times 10^{-2} \frac{\mathrm{rad}}{\mathrm{s}} \mathrm{x}\right)\right] ;$
$\mathbf{E}_{\mathrm{z}}=\mathbf{0}$.
The wave is

155628 In a certain region of space electric field $\vec{E}$ and magnetic field $\vec{B}$ are perpendicular to each other and an electron enters in region perpendicular to the direction of $\vec{B}$ and $\vec{E}$ both and moves undeflected, then velocity of electron is

155629 The electric field associated with an electromagnetic wave in vacuum is given by $E=\hat{i} 40 \cos \left(k z-6 \times 10^{8} t\right)$, where $E, z$ and $t$ are in volt $/ \mathrm{m}$, metre and second respectively. The value of wave vector $k$ is

155631 Which of the following statement is false for the properties of electromagnetic waves ?

155632 The electric field part of an electromagnetic wave in a medium is represented by $E_{x}=0$;
$E_{y}=2.5 \frac{N}{C} \cos \left[\left(2 \pi \times 10^{6} \frac{\mathrm{rad}}{\mathrm{s}}\right) t-\left(\pi \times 10^{-2} \frac{\mathrm{rad}}{\mathrm{s}} \mathrm{x}\right)\right] ;$
$\mathbf{E}_{\mathrm{z}}=\mathbf{0}$.
The wave is

155628 In a certain region of space electric field $\vec{E}$ and magnetic field $\vec{B}$ are perpendicular to each other and an electron enters in region perpendicular to the direction of $\vec{B}$ and $\vec{E}$ both and moves undeflected, then velocity of electron is

155629 The electric field associated with an electromagnetic wave in vacuum is given by $E=\hat{i} 40 \cos \left(k z-6 \times 10^{8} t\right)$, where $E, z$ and $t$ are in volt $/ \mathrm{m}$, metre and second respectively. The value of wave vector $k$ is

155631 Which of the following statement is false for the properties of electromagnetic waves ?

155632 The electric field part of an electromagnetic wave in a medium is represented by $E_{x}=0$;
$E_{y}=2.5 \frac{N}{C} \cos \left[\left(2 \pi \times 10^{6} \frac{\mathrm{rad}}{\mathrm{s}}\right) t-\left(\pi \times 10^{-2} \frac{\mathrm{rad}}{\mathrm{s}} \mathrm{x}\right)\right] ;$
$\mathbf{E}_{\mathrm{z}}=\mathbf{0}$.
The wave is

155628 In a certain region of space electric field $\vec{E}$ and magnetic field $\vec{B}$ are perpendicular to each other and an electron enters in region perpendicular to the direction of $\vec{B}$ and $\vec{E}$ both and moves undeflected, then velocity of electron is

155629 The electric field associated with an electromagnetic wave in vacuum is given by $E=\hat{i} 40 \cos \left(k z-6 \times 10^{8} t\right)$, where $E, z$ and $t$ are in volt $/ \mathrm{m}$, metre and second respectively. The value of wave vector $k$ is

155631 Which of the following statement is false for the properties of electromagnetic waves ?

155632 The electric field part of an electromagnetic wave in a medium is represented by $E_{x}=0$;
$E_{y}=2.5 \frac{N}{C} \cos \left[\left(2 \pi \times 10^{6} \frac{\mathrm{rad}}{\mathrm{s}}\right) t-\left(\pi \times 10^{-2} \frac{\mathrm{rad}}{\mathrm{s}} \mathrm{x}\right)\right] ;$
$\mathbf{E}_{\mathrm{z}}=\mathbf{0}$.
The wave is