TS EAMCET · Physics · Electromagnetic Waves
If the peak value of the magnetic field of an electromagnetic wave is \(30 \times 10^{-9} \mathrm{~T}\), then the peak value of the electric field is
- A \(3 \mathrm{Vm}^{-1}\)
- B \(12 \mathrm{Vm}^{-1}\)
- C \(6 \mathrm{Vm}^{-1}\)
- D \(9 \mathrm{Vm}^{-1}\)
Answer & Solution
Correct Answer
(D) \(9 \mathrm{Vm}^{-1}\)
Step-by-step Solution
Detailed explanation
For EM wave, \(\mathbf{B}_{\mathrm{o}}=30 \times 10^{-9} \mathrm{~T}, \mathrm{C}=3 \times 10^8 \mathrm{~m} / \mathrm{s}\) \(\therefore\) Peak value of electric field is \(\mathrm{E}_{\mathrm{o}}=\mathrm{CB}_{\mathrm{o}}=3 \times 10^8 \times 30 \times 10^{-9}=9 \mathrm{Vm}^{-1}\)
See the Complete Solution
Get step-by-step explanations for this and 2.5 Lakh+ more JEE, NEET & CET questions.
- Unlock all solutions
- Practice the full chapter
- Track accuracy across PYQs
4.8 rated on Google Play · 14,000+ reviews
More questions from Physics
- Two small conducting balls of identical mass \(20 \mathrm{~g}\) and identical charge \(10^{-10} \mathrm{C}\) hang from non-conducting threads of length, \(L=300 \mathrm{~cm}\). If the equilibrium separation of balls is \(x\) and \(x \ll L\) then the magnitude of \(x\) is (Assume, \(4 \pi \in_0=\frac{1}{9 \times 10^9} \mathrm{~F} / \mathrm{m}\) and \(g=10 \mathrm{~m} / \mathrm{s}^2\) )TS EAMCET 2019 Medium
- The magnetic susceptibility of ferromagnetic materials isTS EAMCET 2023 Easy
- If the total energy of an electron in an orbit is positive, thenTS EAMCET 2025 Easy
- A bomb of mass \(16 \mathrm{~kg}\) explodes into two pieces of masses \(4 \mathrm{~kg}\) and \(12 \mathrm{~kg}\). The velocity of the \(12 \mathrm{~kg}\) mass is \(4 \mathrm{~ms}^{-1}\). The kinetic energy of the second piece isTS EAMCET 2023 Easy
- A person initially at rest, starts walking towards east without slipping or skidding. What is the type of friction acting on the person from the ground and in which direction the frictional force acts?TS EAMCET 2023 Easy
- A helicopter flying horizontally with a velocity of 288 kmph drops a bomb. If the line joining the point of dropping the bomb, and the point where bomb hits the ground makes an angle \(45^{\circ}\) with the horizontal, then the height at which the bomb was dropped is (Acceleration due to gravity \(=10 \mathrm{~ms}^{-2}\) )TS EAMCET 2025 Medium
More PYQs from TS EAMCET
- Which of the following is not a correct statement?TS EAMCET 2021 Hard
- The magnetic field intensity at the centre of a long solenoid carrying a current of , is found to be . The number of turns per centimeter of the solenoid is
( UseTS EAMCET 2021 Medium - A circular coil carrying a current of 2.5 A is free to rotate about an axis in its plane perpendicular to an external magnetic field. When the coil is made to oscillate, the time period of oscillation is T. If the current through the coil is 10 A , the time period of oscillation isTS EAMCET 2024 Easy
- A Young's double slit experiment apparatus has slits separated by and a screen away from the slits. The whole apparatus is immersed in a liquid medium of refractive index and the slits are illuminated with green light ( in vacuum). Find the fringe width of the pattern formed on the screen.TS EAMCET 2022 Hard
- A varying current in a coil changes from \(10 \mathrm{~A}\) to zero in \(1.5 \mathrm{~s}\). If the average emf induced in the coil is \(200 \mathrm{~V}\), the self-inductance of the coil isTS EAMCET 2020 Easy
- A photon released by the transition of an electron from the second excited state to the ground state of Hydrogen atom is incident on the surface of a metal of work function \(3.1 \mathrm{eV}\). The de Broglie wavelength of the most energetic electron emitted from that metal surface is nearlyTS EAMCET 2023 Easy