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Electromagnetic Waves Mock Tests

40 questions available

Electromagnetic Waves Mock Test 1

Questions: 30

Electromagnetic Waves Mock Test 2

Questions: 10

नमूना प्रश्न

JEE Advanced Physics
An EM wave in vacuum has E = E₀·sin(kx - ωt)·ĵ. The magnetic field is:
A B = E₀·c·sin(kx - ωt)·k̂
B B = (E₀/c)·cos(kx - ωt)·k̂
C B = (E₀/c)·sin(kx - ωt)·k̂
D B = (E₀/c)·sin(kx - ωt)·(-k̂)
JEE Main Physics
The speed of electromagnetic waves in a medium of permittivity epsilon and permeability mu is:
A 1/√(μϵ)
B √(μϵ)
C μϵ
D 1/(μϵ)
JEE Main Physics
The intensity of electromagnetic wave is given by: (E₀ = electric field amplitude, c = speed of light, ε₀ = permittivity of free space)
A I = (1/2)ε₀E₀²c
B I = ε₀E₀²c
C I = (1/2)ε₀E₀c
D I = (1/2)ε₀E₀²/c
JEE Main Physics
Which of the following electromagnetic waves has the longest wavelength?
A X-rays
B Ultraviolet
C Microwaves
D Infrared
NEET Physics
The wavelength of electromagnetic waves is 1 mm. The frequency of these waves is:
A 3 × 10¹¹ Hz
B 3 × 10¹⁰ Hz
C 3 × 10¹² Hz
D 3 × 10⁹ Hz
Class 12 Physics
Electromagnetic waves are produced by:
A a stationary charge
B a uniformly moving charge
C an oscillating charge
D a charge moving at constant velocity
Class 12 Physics
The electromagnetic spectrum region with wavelength 10⁻¹² m to 10⁻⁸ m is:
A Ultraviolet rays
B X-rays
C Microwaves
D Infrared radiation
JEE Main Physics
The ratio of magnetic field to electric field in an electromagnetic wave in vacuum is:
A c
B 1/c
C c²
D 1/c²

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