SSC PYQTier 1 2025

SSC CGL – Combined Graduate Level Examination · வினா 47

When light travels from water to air, which property remains unchanged?

  1. Speed
  2. Frequency
  3. Wavelength
  4. Intensity
விடையைக் காட்டு & விளக்கம்

விடை: (B) Frequency

விளக்கம்

Frequency depends on the source and stays constant during refraction.