Select Chapter Topics:

1. \(\vec{E}\)

2. \(\vec{B}\)

3. \(\vec{E}\times\vec{B}\)

4. \(\vec{B}\times\vec{E}\)

Subtopic: Properties of EM Waves |

84%

From NCERT

NEET - 2024

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Match List-I with List-II (The symbols carry their usual meaning)

Choose the correct answer from the options given below:

List-I |
List-II |
||

A. | \( \oint \vec{E} \cdot d \vec{A}=\dfrac{Q}{\varepsilon_0}\) | I. | Ampere-Maxwell's Law |

B. | \( \oint \vec{B} \cdot d \vec{A}=0 \) | II. | Faraday's Law |

C. | \( \oint \vec{E} \cdot \overrightarrow{d I}=\dfrac{-d(\phi)}{d t} \) | III. | Gauss Law of electrostatics |

D. | \( \oint \vec{B} \cdot \overrightarrow{d l}=\mu_0 i_c+ \mu_0 \varepsilon_0 \dfrac{d\left(\phi_E\right)}{d t}\) | IV. | Gauss's law of magnetism |

Choose the correct answer from the options given below:

1. | A-III, B-IV, C-II, D-I | 2. | A-IV, B-III, C-II, D-I |

3. | A-III, B-II,C-IV,D-I | 4. | A-IV, B-I,C-III, D-II |

Subtopic: Maxwell's Equations |

76%

From NCERT

NEET - 2024

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The property which is not of an electromagnetic wave travelling in free space is that:

1. | the energy density in electric field is equal to energy density in magnetic field. |

2. | they travel with a speed equal to \(\dfrac{1}{\sqrt{\mu_0~ \varepsilon_0}} .\) |

3. | they originate from charges moving with uniform speed. |

4. | they are transverse in nature. |

Subtopic: Properties of EM Waves |

62%

From NCERT

NEET - 2024

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A parallel plate capacitor is charged by connecting it to a battery through a resistor. If \(i\) is the current in the circuit, then in the gap between the plates:

1. | displacement current of magnitude equal to \(i\) flows in the same direction as \(i\). |

2. | displacement current of magnitude equal to \(i\) flows in a direction opposite to that of \(i\). |

3. | displacement current of magnitude greater than \(i\) flows but can be in any direction. |

4. | there is no current. |

Subtopic: Displacement Current |

53%

From NCERT

NEET - 2024

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The electromagnetic radiation which has the smallest wavelength is:

1. X-rays

2. Gamma rays

3. Ultraviolet rays

4. Microwaves

1. X-rays

2. Gamma rays

3. Ultraviolet rays

4. Microwaves

Subtopic: Electromagnetic Spectrum |

69%

From NCERT

NEET - 2024

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If the ratio of relative permeability and relative permittivity of a uniform medium is \(1 : 4.\) The ratio of the magnitudes of electric field intensity \((E)\) to the magnetic field intensity \((H)\) of an EM wave propagating in that medium is:

\(\left(\text{Given that}\sqrt{\frac{\mu_0}{\varepsilon_0}}=120\pi\right)\)

1. \(30\pi:1\)

2. \(1:120\pi\)

3. \(60\pi:1\)

4. \(120\pi:1\)

\(\left(\text{Given that}\sqrt{\frac{\mu_0}{\varepsilon_0}}=120\pi\right)\)

1. \(30\pi:1\)

2. \(1:120\pi\)

3. \(60\pi:1\)

4. \(120\pi:1\)

Subtopic: Properties of EM Waves |

From NCERT

NEET - 2024

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To produce an instantaneous displacement current of \(2~\text{mA}\) in the space between the parallel plates of a capacitor of capacitance \(4~\mu\text{F}\), the rate of change of applied variable potential difference \(\left(\frac{dV}{dt}\right)\) must be:

1. \( 800~ \text{V} / \text{s} \)

2. \( 500~ \text{V} / \text{s} \)

3. \( 200~ \text{V} / \text{s} \)

4. \( 400 ~\text{V} / \text{s}\)

1. \( 800~ \text{V} / \text{s} \)

2. \( 500~ \text{V} / \text{s} \)

3. \( 200~ \text{V} / \text{s} \)

4. \( 400 ~\text{V} / \text{s}\)

Subtopic: Displacement Current |

77%

From NCERT

NEET - 2023

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\(\varepsilon_0\) and \(\mu_0\) are the electric permittivity and magnetic permeability of free space respectively. If the corresponding quantities of a medium are \(2\varepsilon_0\) and \(1.5\mu_0\) respectively, the refractive index of the medium will nearly be:

1. \(\sqrt2\)

2. \(\sqrt3\)

3. \(3\)

4. \(2\)

1. \(\sqrt2\)

2. \(\sqrt3\)

3. \(3\)

4. \(2\)

Subtopic: Properties of EM Waves |

78%

From NCERT

NEET - 2023

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In a plane electromagnetic wave travelling in free space, the electric field component oscillates sinusoidally at a frequency of \(2.0\times 10^{10}~ \text{Hz}\) and amplitude \(48~\text{Vm}^{-1}\). Then the amplitude of the oscillating magnetic field is: (Speed of light in free space \(3\times 10^{8}~ \text{ms}^{-1}\))

1. \(1.6 \times 10^{-6} ~\text{T}\)

2. \(1.6 \times 10^{-9} ~\text{T}\)

3. \(1.6 \times 10^{-8} ~\text{T}\)

4. \(1.6 \times 10^{-7} ~\text{T}\)

1. \(1.6 \times 10^{-6} ~\text{T}\)

2. \(1.6 \times 10^{-9} ~\text{T}\)

3. \(1.6 \times 10^{-8} ~\text{T}\)

4. \(1.6 \times 10^{-7} ~\text{T}\)

Subtopic: Properties of EM Waves |

58%

From NCERT

NEET - 2023

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The ratio of the magnitude of the magnetic field and electric field intensity of a plane electromagnetic wave in free space of permeability \(\mu_0\) and permittivity \(\varepsilon_0\) is:

(Given that \(c=\) velocity of light in free space)

1. \(c\)

2. \(\dfrac1c\)

3. \(\dfrac{c}{\sqrt{\mu_0\varepsilon_0}}\)

4. \(\dfrac{\sqrt{\mu_0\varepsilon_0}}{c}\)

(Given that \(c=\) velocity of light in free space)

1. \(c\)

2. \(\dfrac1c\)

3. \(\dfrac{c}{\sqrt{\mu_0\varepsilon_0}}\)

4. \(\dfrac{\sqrt{\mu_0\varepsilon_0}}{c}\)

Subtopic: Properties of EM Waves |

58%

From NCERT

NEET - 2022

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