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Physics Part-I

Electromagnetic Waves

The terology of different parts of the electromagnetic spectru

Physics Part-I

Class 12

NCERT

Chapter 1: Electric Charges and Fields

47 questions

Chapter 2: Electrostatic Potential and Capacitance

46 questions

Chapter 3: Current Electricity

33 questions

Chapter 4: Moving Charges and Magnetism

41 questions

Chapter 5: Magnetism and Matter

36 questions

Chapter 6: Electromagnetic Induction

28 questions

Chapter 7: Alternating Current

37 questions

Chapter 8: Electromagnetic Waves

20 questions

Suppose that the electric field amplitude of an electromagnetic wave is

E_{0} = 120 N / C

and that its frequency is

ν = 50.0 M Hz

(a) Detere,

B_{0}, ω, k, an d λ

(b) Find the expression for E and B.

The terology of different parts of the electromagnetic spectrum is given in the text. Use the formula

E = h ν

(for energy of a quantum of radiation: photon) and obtain the photon energy in units of eV for different parts of the electromagnetic spectrum. In what way are the different scales of photon energies that you obtain related to the sources of electromagnetic radiation?

In a plane electromagnetic wave, the electric field oscillates sinusoidally at a frequency of

2.0 \times 1 0^{10} Hz

and amplitude

48 V m^{- 1}

(a) What is the wavelength of the wave?

(b) What is the amplitude of the oscillating magnetic field?

\times 1 0^{8} m s^{- 1}

]

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Solving time: 7 mins

The terology of different parts of the electromagnetic spectrum is given in the text. Use the formula $E = h ν$ (for energy of a quantum of radiation: photon) and obtain the photon energy in units of eV for different parts of the electromagnetic spectrum. In what way are the different scales of photon energies that you obtain related to the sources of electromagnetic radiation?

Name: Video solution 1: [Solved] The terology of different parts of the electromagnetic spectrum is given in the text. Use the formula E=hν (for energy of a quantum of radiation: photon) and obtain the photon energy in units of eV for different parts of the electromagnetic spectrum. In what way are the different scales of photon energies that you obtain related to the sources of electromagnetic radiation? - Physics Part-I
Uploaded: 2022-04-21T01:13:44.000Z
Duration: 9 min

Views: 6,126 students

Updated on: Apr 21, 2022

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Physics Part-I (NCERT)

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The terology of different parts of the electromagnetic spectrum is given in the text. Use the formula

E = h ν

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Text solutionVerified

Photon energy

(F or λ = 1 m)

= \frac{6.63 \times 1 0 ^{- 34} \times 3 \times 1 0 ^{8}}{1.6 \times 1 0 ^{- 19}} e V = 1.24 \times 1 0^{- 6} e V

Photon energy for other wavelengths in the figure for electromagnetic spectrum can be obtained by multiplying approximate powers often. Energy of a photon that a source produces indicates the spacings of the relevant energy levels of the source. For example,

λ = 1 0^{- 12}

corresponds to photon energy

= 1.24 \times 1 0^{6} e V = 1.24 M e V

This indicates that nuclear energy levels (transition between which causes

γ

-ray emission) are typically spaced by 1 MeV or so. Similarly, a visible wavelength

λ = 5 \times 1 0^{- 7} m

, corresponds to photon energy= 2.5 eV. This implies that energy levels (transition between which gives visible radiation) are typically spaced by a few eV.

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Practice more questions from Physics Part-I (NCERT)

Suppose that the electric field amplitude of an electromagnetic wave is

E_{0} = 120 N / C

and that its frequency is

ν = 50.0 M Hz

(a) Detere,

B_{0}, ω, k, an d λ

(b) Find the expression for E and B.

The terology of different parts of the electromagnetic spectrum is given in the text. Use the formula

E = h ν

In a plane electromagnetic wave, the electric field oscillates sinusoidally at a frequency of

2.0 \times 1 0^{10} Hz

and amplitude

48 V m^{- 1}

(a) What is the wavelength of the wave?

(b) What is the amplitude of the oscillating magnetic field?

\times 1 0^{8} m s^{- 1}

]

View all

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Question Text	The terology of different parts of the electromagnetic spectrum is given in the text. Use the formula $E = h ν$ (for energy of a quantum of radiation: photon) and obtain the photon energy in units of eV for different parts of the electromagnetic spectrum. In what way are the different scales of photon energies that you obtain related to the sources of electromagnetic radiation?
Updated On	Apr 21, 2022
Topic	Electromagnetic Waves
Subject	Physics
Class	Class 12
Answer Type	Text solution:1 Video solution: 1
Upvotes	230
Avg. Video Duration	9 min

Text solutionVerified

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