An electromagnetic wave of frequency = 3.0 MHz passes from vacuum into a dielectric medium with permittivity = 4.0 _0 . Then: - Physics MCQ AIEEE 2004 2026 | ExamTest.live

mediumMCQAIEEE 20042026Physics

2 attempts50% success rate1 mark

An electromagnetic wave of frequency ν = 3.0 MHz passes from vacuum into a dielectric medium with permittivity ϵ = 4.0 ϵ_{0} . Then:

Solution & Step-by-step Explanation

Frequency is determined by the source and does not change when the wave enters a different medium.The refractive index . For non-magnetic dielectric, .Speed in medium .Since :The wavelength is halved.

Try it yourself before checking the explanation above.

An electromagnetic wave of frequency ν = 3.0 MHz passes from vacuum into a dielectric medium with permittivity ϵ = 4.0 ϵ_{0} . Then:

wavelength is doubled and the frequency remains unchanged

wavelength is doubled and frequency becomes half

wavelength is halved and frequency remains unchanged

wavelength and frequency both remain unchanged

Practice with timed mock tests and track your performance across Physics.