Download App

Electromagnetic Waves — Physics STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 SciencePhysicsElectromagnetic Waves1 Mark
Question
Choose the correct answer from the alternatives given.
The amplitude of an electromagnetic wave in vaccum is doubled with no other changes made to the wave. As a result of this doubling of the amplitude, which of the following statement is correct?
✓

Answer

  1. None of the above is correct
Explanation:
As we know, velocity of electromagnetic wave,
$\text{c}=\frac{1}{\sqrt{\mu_0\epsilon_0}}=\frac{3\times10^8\text{m}}{\text{s}}$ 
which is constant
So It is independent of amplitude of electromagnetic wave, frequency and wavelength of electromagnetic wave.
so none of the above is correct.

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→Rajasthan Board STD 12 Science question papers→Rajasthan Board question paper generator→

Similar questions

When a photon stimulates the emission of another photon, the two photons have:
  1. Same energy.
  2. Same direction.
  3. Same phase.
  4. Same wavelength.
  5. All of the above
→
The refraction of light is commonly known as:
→
Which one of the series of hydrogen spectrum is in the visible region(a) Lyman series (b) Balmer series (c) Paschen series(d) Bracket series
       
→
If each resistance in the figure is of $9 {\Omega}$ then reading of ammeter is        
→
A body having its centre of mass at the origin has three of its particles at $(a, 0, 0), (0, a, 0), (0, 0, a).$ The moments of inertia of the body about the $X$ and $Y$ axes are $0.20\ kg-m^2$ each. The moment of inertia about the $Z-$axis:
→
A metallic block carrying current $I$ is subjected to a uniform magnetic induction $\overrightarrow{B}$ as shown in the figure. The moving charges experience a force $\overrightarrow{F}$ given by $.........$ which results in the lowering of the potential of the face $........$ Assume the speed of the carriers to be $v$
→
The energy of an electromagnetic radiation is 13.2 keV. The radiation is related to which region of spectrum ?
→
Forbidden gap in a pure conductor is:
→
Two identical thin rings each of radius $R$ meters are coaxially placed at a distance $R$ meters apart. If $Q_1$ coulomb and $Q_2$ coulomb are respectively the charges uniformly spread on the two rings, the work done in moving a charge qfrom the centre of one ring to that of other is
→
Two conductors made of the same material are connected across a common potential difference. Conductor $A$ has twice the diameter and twice the length of conductor $B .$ The power delivered to the two conductors $\mathrm{P}_{\mathrm{A}}$ and $\mathrm{P}_{\mathrm{B}}$ respectively is such that $\mathrm{P}_{\mathrm{A}} / \mathrm{P}_{\mathrm{B}}$ equals to
→