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A radio can tune in to any station in the 7.5 MHz to 12 MHz ba
Physics Part-I
Physics Part-I

Class 12

NCERT

Publisher:
NCERT
Subject:
Physics
1

Chapter 1: Electric Charges and Fields

47 questions

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2

Chapter 2: Electrostatic Potential and Capacitance

46 questions

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3

Chapter 3: Current Electricity

33 questions

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4

Chapter 4: Moving Charges and Magnetism

41 questions

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5

Chapter 5: Magnetism and Matter

36 questions

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6

Chapter 6: Electromagnetic Induction

28 questions

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7

Chapter 7: Alternating Current

37 questions

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8

Chapter 8: Electromagnetic Waves

20 questions

Q1
A plane electromagnetic wave travels in vacuum along z-direction. What can you say about the directions of its electric and magnetic field vectors? If the frequency of the wave is 30 MHz, what is its wavelength?
Q2
A radio can tune in to any station in the 7.5 MHz to 12 MHz band. What is the corresponding wavelength band?
Q3
A charged particle oscillates about its mean (equilibrium) position with a frequency of . What is the frequency of the electromagnetic waves produced by the oscillator?
View all question
Question
Easy
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Solving time: 3 mins

A radio can tune in to any station in the 7.5 MHz to 12 MHz band. What is the corresponding wavelength band?

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Updated on: Mar 2, 2023

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Physics Part-I (NCERT)

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A radio can tune in to any station in the 7.5 MHz to 12 MHz band. What is the corresponding wavelength band?
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Text SolutionText solutionverified iconVerified



So the range is 40m to 25m
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Practice more questions from Physics Part-I (NCERT)

Q1
A plane electromagnetic wave travels in vacuum along z-direction. What can you say about the directions of its electric and magnetic field vectors? If the frequency of the wave is 30 MHz, what is its wavelength?
Q2
A radio can tune in to any station in the 7.5 MHz to 12 MHz band. What is the corresponding wavelength band?
Q3
A charged particle oscillates about its mean (equilibrium) position with a frequency of . What is the frequency of the electromagnetic waves produced by the oscillator?
View all

Practice questions from Physics Part-I (NCERT)

Question 1
Medium
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Calculate the electric and magnetic fields produced by the radiation coming from a bulb at a distance of . Assume that the efficiency of the bulb is and it is a point source.
Topic

Topic:

Electromagnetic Waves

Book

Book:

Physics Part-I (NCERT)

View 5 solutions

Question 2
Medium
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Views: 5,426

The magnetic field in a plane electromagnetic wave is given by . (a) What is the wavelength and frequency of the wave? (b) Write an expression for the electric field.
Topic

Topic:

Electromagnetic Waves

Book

Book:

Physics Part-I (NCERT)

View 4 solutions

Question 3
Medium
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A parallel plate capacitor with circular plates of radius has a capacitance of . At , it is connected for charging in series with a resistor across a battery (Figure). Calculate the magnetic field at a point , halfway between the centre and the periphery of the plates, after . (The charge on the capacitor at time is , where the time constant is equal to .)
Topic

Topic:

Electromagnetic Waves

Book

Book:

Physics Part-I (NCERT)

View 12 solutions

Question 4
Easy
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Views: 6,107

A plane electromagnetic wave of frequency travels in free space along the -direction. At a particular point in space and time, . What is at this point?
Topic

Topic:

Electromagnetic Waves

Book

Book:

Physics Part-I (NCERT)

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Practice more questions from Electromagnetic Waves

Question 1
Hard
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An EM wave of intensity falls on a surface kept in vacuum and exerts radiation pressure on it. Which of the following are true?
  1. Radiation pressure is if the wave is totally absorbed
  2. Radiation pressure is if the wave is totally reflected
  3. Radiation pressure is if the wave is totally reflected
  4. Radiation pressure is in the range for real surfaces
Topic

Topic:

Electromagnetic Waves

Book

Book:

Physics Exemplar (NCERT Exemplar)

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Question 2
Easy
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The energy contained in a small volume through which an electromagnetic wave is passing oscillates with:
  1. Zero frequency
  2. The frequency of the wave
  3. Half the frequency of the wave
  4. Double the frequency of the wave
Topic

Topic:

Electromagnetic Waves

Book

Book:

Concepts of Physics (HC Verma Part II)

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Question 3
Easy
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The waves which have revolutionized telecommunication in more recent time, are
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  2. radiowaves
  3. light waves
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Topic

Topic:

Electromagnetic Waves

Book

Book:

Master Resource Book in JEE Main Physics (Arihant)

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Question 4
Medium
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Assume that a lamp radiates power uniformly in all directions. What is the magnitude of electric field strength at a distance from the lamp?
Topic

Topic:

Electromagnetic Waves

Book

Book:

Master Resource Book in JEE Main Physics (Arihant)

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Suppose your mass (including the suit) is 83.2 kg. How much charge must you give the suit if you want to fall up , that is, accelerate upward at the same rate that objects normally accelerate downward due to Earth s gravity?
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Question 2
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Desire is caused for Sorrow. 3. When desire ceases, rebirth ceases. 4. Desire can be overcome by following Astanaga Margas. B) Principles 1. Sathya - Truth 2. Ahimsa - Non Violence 3. Asatheya - Non Stealing 4. Brahmacharya - Not Marry C) Astangamargas 1. Right Knowledge 2. Right Conduct 3. Right Thought 4. Right Speech 5. Right Effort 6. Right Meditation 7. Right Livelihood 8. Right Mindfulness. - Gowthama Buddha condemned the caste system, sati practice, child marriage, rites and ritual practices, cow slaughter. - He preached about the equality, non violence, brotherhood etc... He did not refer to God. D) Buddhist Councils
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Optics

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Question 3
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A charged particle carrying a charge ' ' and moving with velocity , enters into a solenoid carrying a current , along its axis. If ' ' is the magnetic induction along the axis of solenoid, then the force ' ' acting on the charged particle will be
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Question 4
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Board MCQ - 1. For athermanous surface
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Question Text
A radio can tune in to any station in the 7.5 MHz to 12 MHz band. What is the corresponding wavelength band?
Updated OnMar 2, 2023
TopicElectromagnetic Waves
SubjectPhysics
ClassClass 12
Answer TypeText solution:1 Video solution: 21
Upvotes2139
Avg. Video Duration5 min