In an electromagnetic wave. - Vidyadip

MCQ

In an electromagnetic wave.

A
Power is equally transferred along electric and magnetic fields
✓
Power is transmitted in a direction perpendicular to both the field
C
Power is transmitted along electric field
D
Power is transmitted along magnetic field

✓

Answer

Correct option: B.

Power is transmitted in a direction perpendicular to both the field

For electromagnetic waves $E$ and $B$ are always perpendicular to each other and perpendicular to the direction of propagation. The direction of propagation is the direction of $E \times B.$
The direction of propagation of the wave is the direction of propagation of its energy and power.

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

Explore more

More "M.C.Q (1 Marks)" from Electromagnetic Waves→Electromagnetic Waves — all question types→Physics STD 12 Science question papers→Gujarat Board STD 12 Science question papers→Gujarat Board question paper generator→

Similar questions

A coil carrying electric current is placed in uniform magnetic field, then

The activity of a sample is $64 \times 10^{-5} Ci.$ Its half$-$life is $3 $ days. The activity will become $5 \times 10^{-6} Ci$ after

A toroid having average diameter $2.5\,m ,$ number $A$ turns $400,$ current $=2 \,A$ and magnetic field has $10, T$ what will be induced magnetic field (in $amp/m)$

The energy of a photon of wavelength $\lambda$ is given by

Two identical particles of mass $m$ and charge $q$ are shot at each other from a very great distance with an initial speed $v$. The distance of closest approach of these charges is

Which of the following is diamagnetism

A capacitor of capacitance $C$ is charged with the help of a $200 \,V$ battery. It is then discharged through a small coil of resistance wire embedded in a thermally insulated block of specific heat capacity $2.5 \times 10^2 \,J / kg$ and mass $0.1 \,kg$. If the temperature of the block rises by $0.4 \,K$, the value of $C$ is

Let $F_1$ be the frequency of second line of Lyman series and $F_2$ be the frequency of first line of Balmer series then frequency of first line of Lyman series is given by

Energy of an electron in an excited hydrogen atom is – 3.4 eV. Its angular momentum will be: $h=6.626 \times 10^{-34} \mathrm{~J}-\mathrm{s}$

An isolated sphere of radius $R$ contains uniform volume distribution of positive charge. Which of the curve shown below, correctly illustrates the dependence of the magnitude of the electric field of the sphere as a function of the distance $r$ from its centre?