NextMockપરીક્ષાઓ શોધો, દા.ત. SSC CGL, UPPSC, Lekhpal
SSC PYQTier 1 2025

SSC CGL – Combined Graduate Level Examination · પ્રશ્ન 47

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

  1. Speed
  2. Frequency
  3. Wavelength
  4. Intensity
જવાબ બતાવો અને સમજૂતી

જવાબ: (B) Frequency

સમજૂતી

Frequency depends on the source and stays constant during refraction.