The electric field of a plane electromagnetic wave is given by E → = E 0 i ^ c o s k z c o s ( ω t ) The corresponding magnetic field B → is then given by:

B → = E 0 c j ^ sin ⁡ k z s i n ( ω t )

B → = E 0 c j ^ cos ⁡ k z s i n ( ω t )

B → = E 0 c k ^ sin ⁡ k z c o s ( ω t )

B → = E 0 c j ^ sin ⁡ k z c o s ( ω t )

E M B I B E

Achieve CUET (UG) Physics Practice Book>Chapter 8 - Electromagnetic Waves>Exercise>Q 10

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Earn 100

The conduction current is the same as displacement current when source is :-

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Important Questions on Electromagnetic Waves

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Achieve CUET (UG) Physics Practice Book>Chapter 8 - Electromagnetic Waves>Exercise>Q 11

Maxwell in his famous equation of electromagnetism introduced the concept

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Achieve CUET (UG) Physics Practice Book>Chapter 8 - Electromagnetic Waves>Exercise>Q 12

Find the magnitude of displacement current when a parallel plate capacitor is charged to

60 μC

. Due to a radioactive source, the plate loses charge at the rate of

1.8 \times 10^{- 8} {Cs}^{- 1}

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Achieve CUET (UG) Physics Practice Book>Chapter 8 - Electromagnetic Waves>Exercise>Q 13

Which of the following represents correct modified formula for Ampere's circuital law?

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Achieve CUET (UG) Physics Practice Book>Chapter 8 - Electromagnetic Waves>Exercise>Q 14

A charged particle oscillates about its mean equilibrium position with a frequency of

10^{9} H z

. The frequency of electromagnetic waves produced by the oscillator is

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Achieve CUET (UG) Physics Practice Book>Chapter 8 - Electromagnetic Waves>Exercise>Q 16

Intensity of radiation at surface of sun is

10^{8} W m^{- 2} .

RMS value of magnetic induction is

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Achieve CUET (UG) Physics Practice Book>Chapter 8 - Electromagnetic Waves>Exercise>Q 17

A plane electromagnetic wave of wave intensity $6 W / m^{2}$ stikes a small mirror of area $40 c m^{2},$ held perpendicular to the approaching wave. The momentum transferred by the wave to the mirror each second is $= 1.6 \times 10^{- 10} K g - m / s$

The radiation force on the mirror will be

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Achieve CUET (UG) Physics Practice Book>Chapter 8 - Electromagnetic Waves>Exercise>Q 22

A red $L E D$ emits light at $0.1 watt$ uniformly around it. The amplitude of the electric field of the light at a distance of $1 m$ from the diode is: