Q43 of 117 Page 10

Do frequency and wavelength change when light travels from one medium to another?

Yes, the frequency and wavelength changes when a ray of light travels from one medium to another medium, because of the change in velocity.

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41 Define 1 dioptre. 42 Why are reflecting prisms used in periscopes? 44 How a virtual image bigger than the object can be produced? 45 Define refractive index in terms of velocity and mass density.