Question
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Solving time: 2 mins
An electromagnetic wave of frequency passes from vacuum into a dielectric medium with permittivity . Then, (a) wavelength is doubled and the frequency remains unchanged (b) wavelength is doubled and frequency becomes half (c) wavelength is halved and frequency remains unchanged (d) wavelength and frequency both remain unchanged
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Text solutionVerified
Exp. (c)
In vacuum,
In medium,
Refractive index,
Wavelength,
and wave velocity,
Hence, it is clear that wavelength and velocity will become half but frequency remains unchanged when the wave is passing through any medium.
In vacuum,
In medium,
Refractive index,
Wavelength,
and wave velocity,
Hence, it is clear that wavelength and velocity will become half but frequency remains unchanged when the wave is passing through any medium.
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Question Text | An electromagnetic wave of frequency passes from vacuum into a dielectric medium with permittivity . Then,
(a) wavelength is doubled and the frequency remains unchanged
(b) wavelength is doubled and frequency becomes half
(c) wavelength is halved and frequency remains unchanged
(d) wavelength and frequency both remain unchanged |
Topic | Electromagnetic Waves |
Subject | Physics |
Class | Class 12 |
Answer Type | Text solution:1 |
Upvotes | 12 |