JEE Mains · Physics · STD 12 - Electromagnetic waves
- JEE Mains 2023
- Easy
- MCQ
The amplitude of magnetic field in an electromagnetic wave propagating along \(y\)-axis is \(6.0 \times 10^{-7}\,T\). The maximum value of electric field in the electromagnetic wave is:
Pick an option to check your answer.
Answer & Solution
Correct Answer
(B) \(180\,Vm ^{-1}\)
Step-by-step Solution
Detailed explanation
\(\frac{E}{B}=C\)
\(E=B C\)
\(=6 \times 10^{-7} \times 3 \times 10^8\)
\(=18 \times 10\)
\(E =180\,Vm ^{-1}\)
More questions from Physics
- One mole of an ideal monoatomic gas is taken along the path \(ABCA\) as shown in the \(PV\) diagram. The maximum temperature attained by the gas along the path \(BC\) is given by
JEE Mains 2018 Hard - A bullet of mass \(20\,g\) has an initial speed of \(1\,ms^{-1}\) just before it starts penetrating a mud wall of thickness \(20\,cm.\) If the wall offers a mean resistances of \(2.5 \times 10^{-2}\,N,\) the speed of the bullet after emerging from the other side of the wall is close to .............. \(\mathrm{ms}^{-1}\)JEE Mains 2019 Medium
- Nucleus A is having mass number \(220\) and its binding energy per nucleon is \(5.6 \,MeV\). It splits in two fragments '\(B\)' and '\(C\)' of mass numbers \(105\) and \(115\) The binding energy of nucleons in '\(B\)' and '\(C\) ' is \(6.4 \,MeV\) per nucleon. The energy \(Q\) released per fission will be............\(MeV\)JEE Mains 2022 Medium
- If the distance between object and its two times magnified virtual image produced by a curved mirror is \(15 \mathrm{~cm}\), the focal length of the mirror must be _______.JEE Mains 2024 Hard
- Match List\(-I\) with List\(-II.\)
List\(-I\) List\(-II\) \((a)\) \(10\, km\) height over earth's surface \((i)\) Thermosphere \((b)\) \(70\, km\) height over earth's surface \((ii)\) Mesosphere \((c)\) \(180\, km\) height over earth's surface \((iii)\) Stratosphere \((d)\) \(270\, km\) height over earth's surface \((iv)\) Troposphere JEE Mains 2021 Medium - A rigid diatomic ideal gas undergoes an adiabatic process at room temperature. The rational between temperature and volume for the process is \(TV^x =\) constant, then \(x\) isJEE Mains 2019 Medium
More PYQs from JEE Mains
- Net gravitational force at the centre of a square is found to be \( F_{1} \) when four particles having mass M, 2M, 3M and 4M are placed at the four corners of the square as shown in figure and it is \( F_{2} \) when the positions of 3M and 4M are interchanged. The ratio \( \frac{F_{1}}{F_{2}} \) is \( \frac{\alpha}{\sqrt{5}} \). The value of \( \alpha \) is __________ .
JEE Mains 2026 Easy - In the given circuit diagram when the current reaches steady state in the circuit, the charge on the capacitor of capacitance \(C\) will be
JEE Mains 2017 Medium - 10 mole of oxygen is heated at constant volume from \(30^{\circ} C\) to \(40^{\circ} C\). The change in the internal energy of the gas is _________ cal. (The molecular specific heat of oxygen at constant pressure, \(C _{ p }=7 cal . / mol ^{\circ} C\) and \(\left.R =2 cal . / mol ^{\circ} C .\right)\)JEE Mains 2026 Medium
- The energy released if hydrogen atoms are combined to form \(^{4}_{2}\text{He}\) is __________ MeV. (Take binding energies per nucleon of \(^{2}_{1}\text{H}\) and \(^{4}_{2}\text{He}\) as \(1.1\) MeV and \(7.2\) MeV, respectively)JEE Mains 2026 Medium