NextMockपरीक्षा शोधा, उदा. SSC CGL, UPPSC, Lekhpal
SSC PYQTier 1 2025

SSC CGL – Combined Graduate Level Examination · प्रश्न 47

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

  1. Speed
  2. Frequency
  3. Wavelength
  4. Intensity
उत्तर दाखवा आणि स्पष्टीकरण

उत्तर: (B) Frequency

स्पष्टीकरण

Frequency depends on the source and stays constant during refraction.