Light enters from air into water of refractive index 4 3 . The percentage change in its wavelength is

Step-by-step solution

The wavelength of light in a medium of refractive index is given by ' = , where is the wavelength in air. Given = 4 3 . ' = 4/3 = 3 4 Change in wavelength, = - ' = - 3 4 = 4 Percentage change in wavelength = 100 = /4 100 = 25 % Answer: 25 %