Physics, asked by ypathrabe73, 3 months ago

In an electromagnetic wave in free space,
the root mean square value of the electric field
is 6 volt per meter. The peak value of the
magnetic field is in the unit of nano T
Answer
A.
28
B. 15
C. 8
D. 4​

Answers

Answered by aryan65265727
0

Answer:

In an electromagnetic wave in free space the root mean square value of the electric field is . The peak value of the magnetic field is :

NEET NEET 2017Electromagnetic Waves Report Error

A

B

C

D

Solution:

Questions from NEET 2017

1. A physical quantity of the dimensions of length that can be formed out of c, G and  is [c is velocity of light, G is universal constant of gravitation and e is charge] :-

Physical World, Units and Measurements

2. Two rods  and  of different materials are welded together as shown in figure. Their thermal conductivities are  and . The thermal conductivity of the composite rod will be :

Thermal Properties of Matter

3. A capacitor is charged by a battery . The battery is removed and another identical uncharged capacitor is connected in parallel. The total electrostatic energy of resulting system :

Electrostatic Potential and Capacitance

4. In a common emitter transistor amplifier the audio signal voltage across the collector is . The resistance of collector is . If current gain is  and the base resistance is , the voltage and power gain of the amplifier is :

Semiconductor Electronics: Materials Devices and Simple Circuits

5. Thermodynamic processes are indicated in the following diagram :

Column 1Column 2P.Process Ia.AdiabaticQ.Process IIb.sobaricR.Process IIIc.IsochoricS.Process IVd.Isothermal

Thermodynamics

6. Suppose the charge of a proton and an electron differ slightly. One of them is , the other is (e + e). If the net of electrostatic force and gravitational force between two hydrogen atoms placed at a distance d (much greater than atomic size) apart is zero, then  is of the order of [Given mass of hydrogen ]

Electric Charges and Fields

7. The resistance of a wire is 'R' ohm. If it is melted and stretched to 'n' times its original length, its new resistance will be :-

Current Electricity

8. The given electrical network is equivalent to :

Semiconductor Electronics: Materials Devices and Simple Circuits

9. The de-Broglie wavelength of a neutron in thermal equilibrium with heavy water at a temperature T (Kelvin) and mass m, is :-

Dual Nature of Radiation and Matter

10. Which one of the following represents forward bias diode ?

Semiconductor Electronics: Materials Devices and Simple Circuits

Questions from Electromagnetic Waves

1. A plane electromagnetic wave travels in vacuum along z-direction. If the frequency of the wave is  then its wavelength is

2. The electric field part of an electromagnetic wave in a medium is represented by ,

,

. The wave is

AIPMT 2009

3. An electric charge in uniform motion produces

Similar questions