Practicing Success
Case : Read the passage and answer the question(s). The properties of a light such as its speed, frequency and wavelength and properties of the medium like its refractive index give us a lot of information about the interaction of light with that medium. Consider a monochromatic ray of light travelling in vacuum with speed c, wavelength λ and frequency v, enters into a medium of refractive index 1.5. |
What will be its new speed? |
c/2.4 c/2.7 c/1.5 c/1.2 |
c/1.5 |
Use : refractive index = c/v $\Rightarrow v = \frac{c}{\mu} = \frac{c}{1.5}$ |