MCQ
Given below are two statements:

Statement $I$ : Electromagnetic waves are not deflected by electric and magnetic field.

Statement $II$ : The amplitude of electric field and the magnetic field in electromagnetic waves are related to each other as $E _0=\sqrt{\frac{\mu_0}{\varepsilon_0}} B_0$

In the light of the above statements, choose the correct answer from the options given below:

  • Statement $I$ is true but statement $II$ is false 
  • B
    Both Statement $I$ and Statement $II$ are true
  • C
    Statement $I$ is false but statement $II$ is true.
  • D
    Both Statement $I$ and Statement $II$ are false.

Answer

Correct option: A.
Statement $I$ is true but statement $II$ is false 
a
Statement$-I$ is correct as $EMW$ are neutral.

Statement$-II$ is wrong.

$E _0=\sqrt{\frac{1}{\mu_0 \varepsilon_0}} B _0$

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

If the energy released in the fission of one nucleus is $200\, MeV$. Then the number of nuclei required per second in a power plant of $16\, kW$ will be
A current i passes through a wire of length $l$, radius of cross-section $r$ and resistivity $\rho$. The rate of heat generation is
In a full wave rectifiers, input ac current has a frequency ‘n’. The output frequency of current is
An example of an equipotential surface in earth is:
Two identical conducting spheres $A$  and $B,$  carry equal charge. They are separated by a distance much larger than their diameter, and the force between them is $F$ . A third identical conducting sphere, $C,$  is uncharged. Sphere $C$  is first touched to $A,$ then to $B,$  and then removed. As a result, the force between $A$  and $B$  would be equal to
How much energy in kilowatt hour is consumed in operating ten 50 watt bulbs for 10 hours per day in a month (30 days).
The value of the horizontal component of the earth's magnetic field and angle of dip are $1.8\times 10^{-5}$weber/m$^2$  and 30° respectively at some place. The total intensity of earth's magnetic field at that place will be
A mass m = 20 g has a charge q = 30 mC. It moves with a velocity of 20 m/s and enters a region of electric field of 80 N/C in the same direction as the velocity of the mass. The velocity of the mass after 3 seconds in this region is
In the following circuit, the bulb will become suddenly bright if
In the circuit shown, initially there is no charge on capacitors and keys $S _1$ and $S _2$ are open. The values of the capacitors are $C _1=10 \mu F , C _2=30 \mu F$ and $C _3= C _4=80 \mu F$.

Which of the statement($s$) is/are correct ?

$(1)$ The keys $S _1$ is kept closed for long time such that capacitors are fully charged. Now key $S _2$ is closed, at this time, the instantaneous current across $30 \Omega$ resistor (between points $P$ and $Q$ ) will be $0.2 A$

$(2)$ If key $S _1$ is kept closed for long time such that capacitors are fully charged, the voltage difference between points $P$ and $Q$ will be $10 V$.

$(3)$ At time $t =0$, the key $S _1$ is closed, the instantaneous current in the closed circuit will be $25 mA$.

$(4)$ If key $S _1$ is kept closed for long time such that capacitors are fully charged, the voltage across the capacitors $C _1$ will be $4 V$.