An electromagnetic wave of wavelength $2 \times 10^{-10} \mathrm{~m}$ passes from vacuum into a dielectric…

An electromagnetic wave of wavelength $2 \times 10^{-10} \mathrm{~m}$ passes from vacuum into a dielectric medium of relative permitivity 4 . Then its wavelength will be
  1. $0.5 \times 10^{-10} \mathrm{~m}$
  2. $0.7 \times 10^{-10} \mathrm{~m}$
  3. $1.8 \times 10^{-10} \mathrm{~m}$
  4. $2.8 \times 10^{-10} \mathrm{~m}$

Solution

No solution. Refer to answer key.

Asked in: AP EAMCET 2018 (24 Apr Shift 2)

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