When a ray of light of frequency $6 \times 10^{14} \ Hz$ travels from water of refractive index $4/3$ to glass of refractive index $8/5$,its

  • A
    frequency becomes $5/6$th of its initial value
  • B
    speed becomes $5/6$th of its initial value
  • C
    wavelength becomes $6/5$th of its initial value
  • D
    speed becomes $6/5$th of its initial value

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