Q77 / 90 · JEE Main 2022 (27 Jun Shift 2) · Physics

If a wave gets refracted into a denser medium, then which of the following is true?

  • A
    Wavelength, speed and frequency decreases.
  • B
    Wavelength increases, speed decreases and frequency remains constant.
  • Correct answer
    C
    Wavelength and speed decreases but frequency remains constant.
  • D
    Wavelength, speed and frequency increases.

Solution

In refraction from one medium to another, the speed and wavelength gets changed. The frequency remains unchanged.

Hence, the correct answer is option: 'C'.

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