Samacheer Kalvi solutions for Physics - Volume 1 and 2 [English] Class 12 TN Board chapter 5 - Electromagnetic waves [Latest edition]

The dimension of `1/(mu_0 ∈_0)` is

If the amplitude of the magnetic field is 3 x 10^-6 T, then amplitude of the electric field for a electromagnetic waves is ______.

Which of the following electromagnetic radiations is used for viewing objects through fog ______.

Which of the following is false for electromagnetic waves.

Consider an oscillator which has a charged particle oscillating about its mean position with a frequency of 300 MHz. The wavelength of electromagnetic waves produced by this oscillator is ______.

The electric and magnetic fields, associated with an electromagnetic wave, propagating along negative X-axis can be represented by ______.

In an electromagnetic wave in free space the rms value of the electric field is 3 V m^-1. The peak value of the magnetic field is ______.

An e.m. wave is propagating in a medium with a velocity `vec"v" = "v" hat"i"`. The instantaneous oscillating electric field of this e.m. wave is along +y-axis, then the direction of an oscillating magnetic field of the e.m. wave will be along:

If the magnetic monopole exists, then which of the Maxwell’s equation to be modified?

Fraunhofer lines are an example of _______ spectrum.

Which of the following is an electromagnetic wave?

Which one of them is used to produce a propagating electromagnetic wave?

Let E = E₀ sin[10⁶ x -ωt] be the electric field of plane electromagnetic wave, the value of ω is ______.

Which of the following is NOT true for electromagnetic waves?

The electric and magnetic fields of an electromagnetic wave are ______.

What is displacement current?

What are electromagnetic waves?

Write down the integral form of modified Ampere’s circuital law.

Write notes on Gauss' law in magnetism.

Give two uses of IR radiation.

Give two uses of Microwaves.

Give two uses of UV radiation.

What are Fraunhofer lines? How are they useful in the identification of elements present in the Sun?

Write notes on Ampere-Maxwell law.

Why are e.m. waves non-mechanical?

Write down Maxwell equations in integral form.

Write a short note on the microwave.

Write a short note on the X-ray.

Write a short note on the radio waves.

Write a short note on the visible spectrum.

Discuss the Hertz experiment.

Explain the Maxwell’s modification of Ampere’s circuital law.

Explain the importance of Maxwell’s correction.

Write down the properties of electromagnetic waves.

Discuss the source of electromagnetic waves.

Explain the types of emission spectrum.

Explain the types of absorption spectrum.

Consider a parallel plate capacitor whose plates are closely spaced. Let R be the radius of the plates and the current in the wire connected to the plates is 5 A, calculate the displacement current through the surface passing between the plates by directly calculating the rate of change of flux of electric field through the surface.

A transmitter consists of LC circuit with an inductance of 1 μH and a capacitance of 1 μF. What is the wavelength of the electromagnetic waves it emits?

A pulse of light of duration 10^-6 s is absorbed completely by a small object initially at rest. If the power of the pulse is 60 x 10^-3 W, calculate the final momentum of the object.

Let an electromagnetic wave propagate along the x-direction, the magnetic field oscillates at a frequency of 10¹⁰ Hz and has an amplitude of 10^-5 T, acting along the y – direction. Then, compute the wavelength of the wave. Also write down the expression for the electric field in this case.

If the relative permeability and relative permittivity of the medium is 1.0 and 2.25, respectively. Find the speed of the electromagnetic wave in this medium.